A simple pendulum suspended from the ceiling of a lift has time period T when the lift is at rest. When the lift falls freely, the time period is_________________?

A. Infinite
B. T/g
C. Zero
D. G/t

The energy of SHM is maximum at_______________?

A. Mean position
B. Extreme position
C. In between mean and extreme
D. All positions during shm

The product of the frequency and time period is equal to_________________?

A. 1
B. 2
C. 3
D. 4

The length of the second pendulum is_________________?

A. 100 cm
B. 99 cm
C. 99.2 cm
D. 98 cm

The displacement of SHM is written as X = X`sinθt if the displacement is written by X = Xθ sont then phase constant will be equal to_______________?

A. 0°
B. 45°
C. 90°
D. 180°

For what displacement the P.E becomes 1/4 of its maximum value ?

A. X = x’
B. X = x’/2
C. X = x’/4
D. X = x(2)’/2

Which one does not work according to resonance ?

A. T.v
B. Radio
C. Microwave oven
D. Bulb

The restoring force acting on the simple pendulum is given by_______________?

A. Mg sin θ
B. Mg sin θ
C. Mg cos θ
D. Mg cos θ

The phase of SHM describes________________?

A. Displacement only
B. The direction of motion only
C. Both displacement and direction of motion
D. Neither displacement nor direction of motion

The sharpness of resonance is__________________?

A. Directly proportional to the damping force
B. Inversely proportional to the damping force
C. Equal to the square of damping force
D. Equal to the square of damping force