"Without Calculation" Physics Qs - Mock Test # 1

Contact Number: 9667591930 / 8527521718

5.
Physics - Section A The pressure and volume of a gas are changed as shown
1. in the P-V diagram in this figure. The temperature of the
Which of the following is not due to total internal reflection? gas will:
1. Difference between apparent and real depth of the
pond
2. Mirage on hot summer days
3. Brilliance of diamond
4. Working of optical fiber

2.
A forward-biased diode is treated as:
1. increase as it goes from A to B.
1. An open switch with infinite resistance
2. increase as it goes from B to C.
2. A closed switch with a voltage drop of 0 V
3. remain constant during these changes.
3. A closed switch in series with a battery with voltage of
0.7 V 4. decrease as it goes from D to A.

4. A closed switch in series with small resistance and a

battery
6.
Which of the following is not an electromagnetic wave?
3. 1. Radio wave
α -particle consists of: 2. Micro wave
1. 2 protons only 3. Cosmic rays
2. 2 protons and 2 neutrons only 4. γ-rays
3. 2 electrons, 2 protons, and 2 neutrons
4. 2 electrons and 4 protons only
7.
A metallic resistor is connected across a battery. If the
4. number of collisions of free electrons with the lattice is
somehow decreased in the resistor (for example cooling
In a transistor, the base is very lightly doped as compared it), the current will:
to the emitter because by doing so
1. Increase
1. The flow across the base region is mainly because of
electrons 2. Decrease

2. The flow across the base region is mainly because of 3. remain the same
holes 4. become zero
3. Recombination is decreased in the base region
4. Base current is high

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 "Without Calculation" Physics Qs - Mock Test # 1
Contact Number: 9667591930 / 8527521718
8. 9.
Which of the following wiring diagrams can be used to An insulator plate is passed between the plates of a
experimentally determine R using Ohm's law? Assume capacitor. Then current:
the voltmeter and the ammeter to be ideal.

1.

1. Always flows from A to B

2. Always flows from B to A
3. First flows from A to B and then from B to A
4. First flows from B to A and then from A to B

2.
10.
A direct current is passing through a wire. It is bent to
form a coil of one turn. Now it is further bent to form coil
of two turns but of smaller radius. The ratio of the
magnetic induction at the centre of this coil and at the
centre of the coil of one turn is:
1. 1: 4
3.
2. 4: 1
3. 2: 1
4. 1: 1

11.
Electrons moving with different speeds enter in uniform
4. magnetic field in a direction perpendicular to the field. If
they move along circular paths, then the time periods of
rotation will be:
1. same for all electrons
2. greater for the faster electrons
3. smaller for the faster electrons
4. either 2 or 3 depending on the magnitude of the
magnetic field

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 "Without Calculation" Physics Qs - Mock Test # 1
Contact Number: 9667591930 / 8527521718
12. 14.
A uniform magnetic field B is directed out of the page. A The reactance of a circuit is zero. It is possible that the
metallic wire has the shape of a square frame and is circuit contains:
placed in the field as shown. While the shape of the wire
is steadily transformed into a circle in the same plane, the 1. an inductor and a capacitor
current in the frame: 2. an inductor but no capacitor
3. a capacitor but no inductor
4. All of the above

15.
Dimensional analysis cannot be used for:
1. deriving relations
2. deriving relation with four unknown variables
3. converting system of units
4. checking correctness of relations
1. is directed clockwise
2. does not appear
16.
3. is directed counter clockwise
Figure below shows the velocity-time graph. This graph
4. is alternating
tells us that the body is:

13.
A and B are two metallic rings placed at opposite sides of
an infinitely long straight conducting wire as shown. If
current in the wire is slowly decreased, the direction of
the induced current will be :

1. Starting from rest and moving with increasing

acceleration
2. Moving with uniform speed.
3. Moving with uniform acceleration.
4. Moving with decreasing acceleration.

1. clockwise in A and anticlockwise in B

2. anticlockwise in A and clockwise in B
3. clockwise in both A and B
4. anticlockwise in both A and B

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 "Without Calculation" Physics Qs - Mock Test # 1
Contact Number: 9667591930 / 8527521718
17. 20.
If the angle between two forces increases, the magnitude A proton is kept at rest. A positively charged particle is
of their resultant: released from rest at a distance S in its field. Consider
two experiments; one in which the charged particle is
1. Decreases also a proton and in another, a positron. In the same time
2. Increases t, the work done on the two moving charged particles is

3. Remains unchanged 1. same as the same force law is involved in the two
experiments.
4. First decreases and then increases
2. less for the case of a positron, as the positron moves
away more rapidly and the force on it weakens.

18. 3. more for the case of a positron, as the positron moves a

larger distance away.
A ball is travelling with uniform translatory motion. This
means that: 4. same as the work is done by a charged particle on the
stationary proton.
1. It is at rest.
2. The path can be a straight line or circular and the ball
travels with uniform speed.
3. All parts of the ball have the same velocity (magnitude
and direction) and the velocity is constant.
4. The centre of the ball moves with constant velocity
and the ball spins about its centre uniformly.

19.
The potential energy of a system increases if work is
done:
1. by the system against a conservative force.
2. by the system against a non-conservative force.
3. upon the system by a conservative force.
4. upon the system by a non-conservative force.

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 "Without Calculation" Physics Qs - Mock Test # 1
Contact Number: 9667591930 / 8527521718
21. 23.
Which of the diagrams represents variation of total A body projected vertically from the Earth reaches a
mechanical energy of a pendulum oscillating in air as a height equal to the Earth's radius before returning to the
function of time? Earth. The power exerted by the gravitational force:
1. is the greatest at the instant just before the body hits
the Earth.
2. remains constant all through.
3. is the greatest at the instant just after the body is
projected.
4. is the greatest at the highest position of the body.
1.

24.
Which one of the following statements is wrong?
1. Young's modulus for a perfectly rigid body is zero.
2. Bulk modulus is relevant for solids, liquids, and gases.
2. 3. Rubber is less elastic than steel.
4. The Young's modulus and shear modulus are relevant
for solids.

25.
The wettability of a surface by a liquid depends primarily
3. on:
1. viscosity
2. surface tension
3. density
4. angle of contact between the surface and the liquid

4.
26.
Water is flowing in a horizontal pipe of non-uniform
22. cross-section. At the most contracted place of the pipe:
Internal forces can change: 1. velocity of water will be maximum and pressure
1. the linear momentum but not the kinetic energy of the minimum.
system. 2. pressure of water will be maximum and velocity
2. the kinetic energy but not the linear momentum of the minimum.
system. 3. both pressure and velocity of water will be maximum.
3. linear momentum as well as kinetic energy of the 4. both pressure and velocity of water will be minimum.
system.
4. neither the linear momentum nor the kinetic energy of
the system.

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 "Without Calculation" Physics Qs - Mock Test # 1
Contact Number: 9667591930 / 8527521718
27. 31.
A piece of iron is heated in a flame. If it becomes dull red The wavelength of a sound wave in gas is:
first, then becomes reddish yellow, and finally turns to
white hot, the correct explanation for the above 1. The distance between compression and rarefaction
observation is possible by using: propagating in the medium.

1. Stefan's law 2. The distance traveled by the wave in one second.

2. Wien's displacement law 3. The distance between two consecutive particles of the
medium oscillating in the same phase.
3. Kirchhoff's law
4. None of the above
4. Newton's law of cooling

32.
28.
A convex lens is dipped in a liquid whose refractive
Heat is associated with: index is equal to the refractive index of the lens. Then its
focal length will:
1. kinetic energy of random motion of molecules.
(1) Become zero
2. kinetic energy of orderly motion of molecules.
(2) Become infinite
3. total kinetic energy of random and orderly motion of
molecules. (3) Become small, but non-zero
4. kinetic energy of random motion in some cases and (4) Remain unchanged
kinetic energy of orderly motion in other.

33.
29.
In which of the following systems will be radius of the
In thermodynamic processes, which of the following first orbit (n = 1) be minimum -
statements is not true?
(1) Doubly ionized lithium
1. In an adiabatic process, the system is insulated from
the surroundings. (2) Singly ionized helium

2. In an isochoric process, pressure remains constant. (3) Deuterium atom

3. In an isothermal process, the temperature remains (4) Hydrogen atom

constant.
4. In an adiabatic process, P V γ
= constant.
34.
J.J. Thomson's cathode-ray tube experiment
30. demonstrated that

If we study the vibration of a pipe open at both ends, (1) cathode rays are streams of negatively charged ions
which of the following statements is not true? (2) all the mass of an atom is essentially in the nucleus
1. Open end will be an antinode. (3) the e/m of electrons is much greater than the e/m of
2. Odd harmonics of the fundamental frequency will be protons
generated. (4) the e/m ratio of the cathode ray particles changes
3. All harmonics of the fundamental frequency will be when a different gas is placed in the discharge tube
generated.
4. Pressure change will be maximum at both ends.

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 "Without Calculation" Physics Qs - Mock Test # 1
Contact Number: 9667591930 / 8527521718
35. 38.
One end of the string of length ‘l’ is connected to a Identify the correct definition.
particle of mass ‘m’ and the other end is connected to a
small peg on a smooth horizontal table. If the particle 1. If after every certain interval of time, a particle repeats
moves in a circle with speed 'v', the net force on the its motion then motion is called periodic motion.
particle (directed towards the centre) will be: (T 2. To and fro motion of a particle is called oscillatory
represents the tension in the string) motion.
2

1. T +
mv
3. Oscillatory motion described in terms of single sine
l
and cosine functions is called simple harmonic motion.
2

2.T
mv
−
l 4. All of the above
3. Zero
4. T
39.
In a Millikan-type experiment, there are two oil droplets
P and Q between the charged horizontal plates, as shown
Physics - Section B in the diagram. Droplet P is in rest while droplet Q is
moving upwards. The polarity of the charges on P and Q
36.
is
Work energy theorem is applicable to a system when the
force acting on the system is/are
(1) Conservative only
(2) Non-conservative only
(3) Internal only
(4) All forces P Q
1. + +
2. Neutral -
37.
3. - -
An astronomical refracting telescope will have large
angular magnification and high angular resolution when 4. + -
it has an objective lens of:-
1. small focal length and large diameter
40.
2. large focal length and small diameter
The power generated across a uniform wire connected
3. large focal length and large diameter across a supply is H. If the wire is cut into n equal parts
4. small focal length and small diameter and all the parts are connected in parallel across the same
supply, the total power generated in the wire is:
1. H
2
n

2. n2H
3. nH
4. H

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 "Without Calculation" Physics Qs - Mock Test # 1
Contact Number: 9667591930 / 8527521718
41. 43.
Two non-ideal batteries are connected in parallel. A negative charge is given to a non-conducting loop and
Consider the following statements: the loop is rotated in the plane of paper about its centre as
shown in the figure. The magnetic field produced by the
(A) The equivalent EMF is smaller than either of the two ring affects a small magnet placed above the ring in the
EMFs. same plane such that
(B) The equivalent internal resistance is smaller than
either of the two internal resistances.
1. Both (A) and (B) are correct
2. (A) is correct and (B) is wrong
3. (B) is correct but (A) is wrong
4. Both (A) and (B) are wrong

42.
An isolated metallic sphere of radius R has an electric
charge. It is connected by means of a conducting wire to
a distant uncharged metallic sphere of radius r (r<R). 1. the magnet does not rotate
Which of the following statements is/are correct? 2. the magnet rotates clockwise as seen from below
1. Total energy of the system must increase 3. the magnet rotates anticlockwise as seen from below
2. Total energy of the system must decrease 4. no effect on the magnet is there
3. Final surface charge densities on two spheres may be
equal to each other
4. None of these 44.
For a particle performing uniform circular motion,
choose the correct statement(s) from the following:
1. Magnitude of particle velocity (speed) remains
variable.
2. Particle velocity remains directed parallel to radius
vector.
3. Direction of acceleration keeps changing as particle
moves.
4. Angular momentum is constant in magnitude but
direction keeps changing.

45.
In a cricket match, the fielder draws his hands backward
after receiving the ball in order to take a catch because:
1. His hands will be saved from getting hurt.
2. He deceives the player.
3. It is a fashion.
4. He catches the ball firmly.

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 "Without Calculation" Physics Qs - Mock Test # 1
Contact Number: 9667591930 / 8527521718
46. 50.
Choose the incorrect statement. A nuclear reaction given by
1. The centre of mass of a two-particle system lies on the ZX
A
→Z+1 Y
A 0
+−1 e + v

line joining the two particles, being closer to the heavier

particle represents

2. In rolling, the point of contact of the rolling body (1) β-decay

remains at rest relative to the surface on which it is (2) γ-decay
rolling
(3) fusion
3. Parallel axis theorem is applicable only for laminar
bodies (4) fission
4. A particle moving on a straight line may have non-
zero angular momentum about a point

Fill OMR Sheet*

47.
*If above link doesn't work, please go to test link from
The total energy of an electron in the n stationary orbit where you got the pdf and fill OMR from there
th

of the hydrogen atom can be obtained by:

1.
13.6
En = eV
2
n

2.
13.6
En = − eV

CLICK HERE to get

2
n

3.
1.36
En = − eV

FREE ACCESS for 3

2
n

4. En = − 13. 6 × n
2
eV

days of ANY NEETprep

48. course
A tall man of height 6 feet, wants to see his full image.
Then required minimum length of the mirror will be :
1. 12 feet
2. 3 feet
3. 6 feet
4. Any length

49.
Zener diode is used as -
1. Half wave rectifier
2. Full wave rectifier
3. A.C. voltage stablizer
4. D.C. voltage stablizer

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