411. At Murree Hills (Assume the value of g changes). If we use a simple pendulum as time standard then one-second duration will_____________?
A. Increase
B. Decrease
C. Remains the same
D. Is zero

412. The velocity of the mass attached to a spring is maximum at_______________?
A. Mean position
B. Extreme position
C. Both A and B
D. None

413. The projection of the particle moving in a circle with non-uniform speed executes ?
A. S.H.M
B. Vibratory motion
C. Both B and D
D. None S.H.M

414. Displacement of the body in S.H.M is equal to amplitude when the body is at_______________?
A. Mean position
B. Elsewhere
C. Extreme position
D. None

415. For a simple pendulu,m the restoring force is caused by________________?
A. Gravity
B. Spring
C. Hand
D. All of these

416. The distance covered by a body in one complete vibration is 20cm. What is the amplitude of body ___________________?
A. 10 cm
B. 5 cm
C. 15 cm
D. 7.5 cm

417. A cup of milk is placed in a microwave oven. Tell which statements is false. (1) Milk will be heated up only. (2) Cup will remain cool. (3) Both cup and mild will get hot ?
A. None
B. 1
C. 2
D. 3

418. In case of a simple pendulum, the cause of damping is__________________?
A. Drag force of air
B. Gravity
C. Tension in the string
D. None of these

419. The energy absorbed by a body is __________________ at resonance?
A. Maximum as well minimum
B. Minimum only
C. Maximum only
D. 0

420. The relativistic energy E is equivalent to relativistic mass given by_______________?
A. Ec2
B. E/c2
C. E/c
D. c2/E

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