Practical Questions
I. Choose the correct answer from the given alternative
1. A ball is thrown down ward from the top of the tower after being released, it’s down ward.
A, velocity will be uniform B, Acceleration will be equal to gravity
C, Acceleration will be greater than gravity D, Acceleration will be smaller than gravity
2. Action & reaction forces are:-
A, Always equal in magnitude C, Opposite in direction
B, Act on different bodies D, All are correct
3. Which one of the following statement is not correct?
A, An object can be accelerated without speeding.
B, An object can have constant speed but variable velocity
C, An object can have constant velocity but variable velocity
D, All are not correct.
4. The distance covered by rotating object along the curve path.
A, Tangential displacement C, Angular velocity
B, Terminal Velocity D, Centripetal acceleration
5. Which of the following statement is wrong?
A, The maximum value of static friction is limiting friction.
B, The limiting friction between the way of two contracting surface is independent of the
contact.
C, Force of Friction depends on the normal force.
D, static friction is less than kinetic friction.
6. A particle in motion & is accelerating. The velocity of the motion as a function of time is given by
V(t)=5t3-10t, where V in m/s & t in second. Then find the functional form of acceleration?
A, 15t-10 B, 15t2-10 C, 75t2-10t D, 10t2-10
7. Based on question No(6), what is the instantaneous velocity at t=2sec.
A, 30m/s B, 50m/s C, 20m/s D, 10m/s
8. If the acceleration & velocity have the same sign, then the object is
A, Speeding up C, Moving with constant speed
C, Slowing down D, Not moving
9. Given two vectors A=4i-2j & B=2i+4j, the A.B is equal to
A, 8 B, 16 C, 0 D, 1
10. In question No(9), what is the angle between A & B ?
A, 00 B, 900 C, 1800 D, 450
11. If 0.6j+nj is a unit vector, then what is the value of n?
A, 1 B, 0.4 C, 0.8 D, 0
12. Which one of the following is correct procedure in scientific method?
A, Experiment, Hypothesis, Observation, & Conclusion.
B, Hypothesis, Observation, Experiment & Conclusion
C, Observation, Hypothesis, Experiment & Conclusion
D, Data analysis, Experiment, Prediction & Conclusion.
13. A way of sending information & message in secret is?
A, Quantum cryptography C, Gravitational wave
B, Cryptography D, High energy physics
√ 20
14. If 0.4i + j+bk is a unit vector, what is the value of ‘b’?
10
A, 0.8 B, 0.6 C, 0.36 D, 0.64
15. Suppose vector A=3i-2j+k & B=-i-4j+3k & C is a vector lying along x-axis with property that A.
(B+C)=0, then vector C is given by
3 6 −8
A, -5i B, j C, j D, i
√ 10 √ 10 3
16. If F=(40i+50j)N & V=(2i+10K)m/s . What is the power developed by the machine?
A, 580W B, 100W C, 80W D, 400W
17. The first step in scientific method is__________
A, Hypothesis B, Observation C, Data analysis D, Conclusion
18. Which one of the following quantities expressed only by number & unit?
A, speed B, Acceleration C, Force D, Displacement
19. A vector that represents the position of an object in relation to another object is called
A, unit vector B, Coplanar Vector C, Collinear vector D, Position vector
20. The mission of physics is
A, To advance science B, To advance innovation C, To advance serving society D
All of the above
21. If the resultant of two vectors are maximum, then the angle between them is
A, 1800 B, 00 C, 900 D, 450
22. If vector A=i-j-k, then, the magnitude of 2A is
A, 2 B, √ 3 C, 2√ 3 D, All
23. Which one of the following is not true about graphical representation of vector addition?
A, In triangle law the two vectors are connected head to tail
B, in polygon law the two vectors are connected head to tail
C, In parallelogram law the two vectors are connected tail to tail
D, In parallelogram law the two vectors are connected head to tail
24. A ball is thrown vertically upward with 10m/s. what is the thrown velocity after 0.5sec?(g=10m/s 2)
A, 32rad/s2 B, 16rad/s2 C, 64rad/s2 D, 40rad/s2
25. The angle between the vector (i+j) & (j+k) is
A, 900 B, 300 C, 600 D, 450
