1. In an ac circuit, the current is given by 6. The sun makes 0.5° angle on earth surface.

Its
and the ac potential is V = 200 sin(100t) volt. image is made by convex lens of 50 cm focal
Then the power consumption is: length. The diameter of the image will be
(1) 20 watt (1) 5 mm
(2) 40 watt (2) 4.36 mm
(3) 1000 watt (3) 7 mm
(4) 0 watt (4) 1 mm
2. For series LCR circuit, correct statement is :-
(1) Applied e.m.f. and potential difference across 7. An equiconvex lens has a power of 2D. If it is
resistance are in same phase made of glass of refractive index 1.25, then
(2) Applied e.m.f. and potential difference at radius of curvature of its each surface will be-
(1) 20 cm
inductor coil have phase difference of π/2
(2) 10 cm
(3) Potential difference at capacitor and inductor
(3) 40 cm
have phase difference of π/2
(4) 25 cm
(4) Potential difference across resistance and
8. A plate of mass 10g is in equilibrium in air due
capacitor have phase difference of π/2 to the force exerted by a light beam on the plate.
3. The magnetic field of an electromagnetic wave Calculate power of the beam, If plate is perfectly
is given by B = 3 × 10 sin(10 x + 3 × 10 t), where absorbing.
x in meter and t in second. The wavelength of the (1) 3 × 10 W
electromagnetic wave is : (2) 3 × 10 W
(1) 6.28 cm (3) 2.4 × 10 W
(2) 3.14 cm (4) 2.4 × 10 W
(3) 0.63 cm 9. Choose the correct option for given statements
(4) 0.32 cm Statement-I :- The kinetic energy of
4. The image formed by a convex mirror of focal photoelectrons emitted by a photosensitive
length 30 cm is a quarter of the size of the object. surface depends on the intensity of the incident
The distance of the object from the mirror is- radiation.
(1) 30 cm Statement-II :- In photoelectric emission process,
(2) 90 cm the maximum energy of the photoelectrons
(3) 120 cm increases with increasing intensity of the incident
(4) 60 cm light.
5. A light wave has a frequency of 4 × 10 Hz and
(1) Statement I is correct Statement II is
a wavelength of 5 × 10 meter in a medium. incorrect.
The refractive index of the medium is-
(2) Statement II is correct Statement I is
(1) 1.5
incorrect
(2) 1.33
(3) 1.0 (3) Both Statement I and Statement II are
correct.
(4) 0.66
(4) Both Statement I and Statement II are
 15. In the following logic circuit, the sequence of
10. A material particle with a rest mass m is the inputs A, B are (0, 0), (0, 1). The output Y for
moving this sequence will be
with a velocity of light (C). Then, the wavelength
of the de-Broglie wave associated with it is
(1)
(2) Zero
(3) ∞ (1) 1, 0
(2) 0, 1
(4)
(3) 1, 1
11. Let E and E be the binding energies of two (4) 0, 0
nuclei A and B. It is observed that two nuclei of 16. With increasing biasing voltage of a
A combine together to form a B nucleus. This photodiode, the magnitude of photo electric
observation is correct only if:- current:
(1) E > E2 (1) Remains constant
(2) E > E1 (2) From photodiode in reverse bias, is zero
(3) E > 2E1 (3) Increase initially and then saturates.
(4) None (4) Increase linearly.
17. The electric field intensity due to an infinite
12. Binding energy per nucleon of H and are
cylindrical thin wire having charge q per unit
1.1 MeV and 7.0 MeV respectively. Energy length at a distance r from its axis is
released in the process , H + H → He, is (1) Directly proportional to r2
(1) 20.8 MeV (2) Directly proportional to r3
(2) 16.6 MeV (3) Inversely proportional to r
(3) 25.2 MeV (4) Inversely proportional to r2
(4) 23.6 MeV 18. Charges of + x 10-9 C are placed at each
13. In terms of Rydberg constant R, the shortest of the four corners of a square of side 8 cm. The
wavelength in balmer series of Hydrogen atom potential at the intersection of diagonals is :
spectrum will be :
(1) 150 √2V
(1) (2) 1500 √2V
(2) (3) 900 √2V
(3) (4) 900V
19. Bx and By are the magnetic field at the center
(4)
of two coils x and y respectively each carrying
14. Difference between nth and (n + 1)th Bohr's
equal current. If coil x has 200 turns and 20 cm
radius of hydrogen atom is equal to (n – 1)th radius and coil y has 400 turns and 20 cm radius,
Bohr's radius. The value of n is - the ratio of Bx and By is :-
(1) 1 (1) 1 : 1
(2) 2
(2) 1 : 2
(3) 3
(4) 4 (3) 2 : 1
(4) 4 : 1
20. Two ions of masses 4 amu and 16 amu have 23. The drift velocity of the electrons in a copper
charges +2e and +3e respectively. These ions wire of length 2m under the application of a
pass through the region of constant perpendicular potential difference of 200V is 0.5-1 ms . Their
magnetic field. The kinetic energy of both ions is mobility (in m2 V-1 S-1 ) is:
same then :- (1) 2.5 × 10-3
(1) Lighter ion will be deflected less than heavier (2) 2.5 × 10-2
ion. (3) 5 × 102
(2) Lighter ion will be deflected more than (4) 5 × 10-3
heavier ion. 24. In this circuit, the value of I2 is
(3) Both ions will be deflected equally
(4) No ion will be deflected
21. Magnetic moment of orbital electron in first
orbit of H-atom is 𝜇 B, then magnetic moment of
that electron in second orbit is :-
(1) μB
(2) 2μB (1) 0.2 A
(3) (2) 0.3 A
(3) 0.4 A
(4) 4μB
(4) 0.6 A
22. 25. Two waves originating from S1 and S2 ,
having zero initial phase difference and common
wavelength λ, will show completely destructive
interference at P, if (S1 P – S2 P) is -
(1) 5λ
(2) 0.75λ
(3) 0.6λ
(4) 5.5λ
Three long straight wire are carrying current 26. Two polaroids have their polarizing

according to diagram, then magnetic force per directions parallel so that the intensity of the
unit length on wire Q is :- transmitted light is maximum. The angle through
- which either polaroid must be turned so that
(1) 8 × 10 7 N/m
intensity of transmitted light is dropped to one-
half of previous trasmitted is -
(2) 32 × 10-7 N/m (1) 180o
(2) 120o
(3) 4 × 10-7 N/m (3) 90o
(4) 45o
(4) 16 × 10-7 N/m
27. In a single slit diffraction experiment first the student shifts his/her eye towards left, the
minimum for red light (660 nm) coincides with image appears to the right of the pin, then
first maximum of some other wavelength λ. (1) x < f
(2) f < x < 2f
The value of λ is -
(3) x = 2f
(1) 4400 Å
(2) 6600 Å (4) x > 2f
(3) 2000 Å 31. A parallel plate air capacitor has capacity 'C'

(4) 3500 Å and separation between the plates is 'd'. A

potential difference 'V' is applied between the
28. Assertion : A P-N junction diode is used in plates. Force of attraction between the plates of
reverse bias to detect the intensity of light. the parallel plate air capacitor is :-
Reason : In reverse bias condition, current is
small but it is more sensitive to changes in (1)
intensity of incident light. (2)
(1) Both Assertion & Reason are True & the
Reason is a correct explanation of the Assertion. (3)
(2) Both Assertion & Reason are True but
(4)
Reason is not a correct explanation of the
32. An electric dipole of length 20 cm having ±3
Assertion.
(3) Assertion is True but the Reason is False. × 10-3 C charge placed at 60° with respect to
(4) Both Assertion & Reason are False. uniform electric field experiences a torque of
29. A conductor ABCD is moving with speed V magnitude 6 N–m. The potential energy of
along X axis in a region where magnetic field is dipole is :-
uniform and directed into plane of paper. (1) -2 √3 J
Between which points the maximum induced
(2) 5 √3J
emf is produced :-
(3) -3 √2J
(4) 3√5J
33. The total capacity of the system of capacitors
shown in the adjoining figure between the points
A and B is :-

(1) AC
(2) BD
(3) AB
(4) BC
30. In an experiment to determine the focal
length(f) of a concave mirror by parallax method, (1) 1 μF
a student places the object pin A on principal
axis at a distance x from pole P. The student (2) 2 μF
looks at pin and its inverted image from a (3) 3 μF
distance keeping his/her eye in line with A.When (4) 4 μF
34. For the circuit shown in the figure, the charge
37. What is the angular momentum of an electron
on 4μF capacitor is :-
in Bohr's hydrogen atom whose energy is – 3.4
eV ?
(1)

(2)

(3)

(4)

38. For the given circuit the power across zener

(1) 30μC diode is ________ mW
(2) 40μC
(3) 24μC
(4) 54μC
35. A parallel plate capacitor having capacitance
C farad is connected with a battery of emf V volt.
Keeping the capacitor connected with the battery, (1) 100
a dielectric slab of dielectric constant K is (2) 110
inserted between the plates. The dimensions of
(3) 120
the slab are such that it fills the whole space
between the capacitor plates. Then :- (4) 130
(1) charge on the capacitor plates remains the 39. Match list-I with list-II
same
(2) charge on the plates become K times List-I List-II
(3) potential difference between the plates (a) Rectifier (i) Used for stepping up or stepping
decreases to V/K down the A.C. voltage
(4) all of the above (b) Stabilizer (ii) Used to convert A.C. voltage
36. One requires 11 eV of energy to dissociate a
into DC voltage
carbon monoxide molecule into carbon and (c) Transformer (iii) Used to remove any ripple in the
rectified output voltage
oxygen atoms. The minimum frequency of the
(d) Filter (iv) Used for constant output voltage
appropriate electromagnetic radiation to achieve
the dissociation lies in
(1) visible region (1) a-(ii), b-(iv), c-(i), d-(iii)
(2) infrared region (2) a-(iii), b-(iv), c-(i), d-(ii)
(3) ultraviolet region (3) a-(ii), b-(i), c-(iv), d-(iii)
(4) a-(ii), b-(i), c-(iii), d-(iv)
(4) microwave region
 What is magnetic moment due to given current
40. Two point charges Q and –3Q are placed at distribution ?
some distance apart. If the electric field due to – (1) Ia2j^
3Q at the location of Q is , then electric field due (2) Ia2i^
to Q at the locality of –3Q is : (3) Ia2(i^ + j^)
(1) (−E)i ^ (4) Ia2(i^ + k^)
(2) (E/3) i^ 43. A particle of mass m and charge q is in an
(3) (−3E)i electric and magnetic field, given by →E = 2i^
(4) (−E/3) i^
+ 3j^ and B→ = 4^j + 6k^ . The charged
41. A small sphere carrying a charge 'q' is
particle is shifted from the origin to the point P(x
hanging in between two parallel plates by a
= 1, y = 1) along a straight path. The magnitude
string of length L as shown in fig. Time period of
of the total work done on it is :-
pendulum is T . When parallel plates are charged
(1) (0.35) q
as shown, the time period changes to T. The ratio
(2) (0.15) q
T/T is equal to :
(3) 2.5 q
(4) 5q
44. In the meter bridge experiment for given
values of R and R the balance point is 20 cm
from point A. When R is shunted by 20Ω
resistance, balancing point shift at 50 cm from
point A. Find value of R .
(1)

3/2
(2)

1/2
(3)
(4) None of these

42. (1) 20 Ω
(2) 15 Ω
(3) 60 Ω
(4) 80 Ω
45. The length of thin wire required to
manufacture a solenoid of inductance L and
length ℓ (If cross-sectional diameter is
considered much less than its length) is :-
𝝅𝐋𝓵
(1)
𝟐𝛍𝟎
 𝟒𝝅𝐋𝓵
(2)
𝛍𝟎

𝟐𝝅𝐋𝓵
(3)
𝛍𝟎

𝝅𝐋𝓵
(4)
𝛍𝟎
46. Two L-R circuit are shown. Select correct
relation.

(1) L < L 2
(2) L = L 2
(3) L > L2
(4) Data not sufficient
47. To verify Ohm’s law, a student is provided
with a test resistor R , a high resistance R , a
small resistance R , two identical galvanometers
G and G , and a variable voltage source V. The
correct circuit to carry out the experiment is :- 48. Match the terms given in list-I with suitable
option provided in list-II, regarding experiment
to calculate resistance and figure of merit of a
galvanometer using half deflection method :
List-I List-II
A. Figure of merit (k) P in series
B Current sensitivity (S ) Q to get power loss
minimized
C Deflection is made half R in shunt/parallel
by using resistance
D High resistance Box S current per unit
connected deflection
T deflection per unit
current
(1) A - S, B - T, C - R, D - P
(2) A - T, B - S, C - R, D - P
(3) A - T, B - S, C - P, D - R
(4) A - S, B - T, C - P, D - Q
49. If VA – VB = 7V then find stored energy in C1
? C1= 3𝜇𝐹 C2=6𝜇𝐹

(1) μJ

(2) 6 μJ
(3) μJ

(4) μJ

50. If light travels a distance x in time t sec in air

and10x distance in time t sec in a certain
medium, then find the critical angle of the
medium.
(1) sin-1

(2) sin-1

(3) sin-1

(4) sin-1