Physics MCQs

Page No. 21

Total distance travelled by a bob of the simple pendulum in one vibration is equal to________________?


aAmplitude


bSquare of the amplitude


c2 x amplitude


d4 x amplitude


View Answer 4 x amplitude

Electrical resonance is observed in_______________?


aRadio


bMicrowave oven


cBoth in radio and microwave oven


dNeither in radio nor in a microwave oven


View Answer Radio

The natural frequency of simple pendulum depends upon_______________?


aIt’s mass


b It’s length


cSquare of its length


dThe square root of its length



The sharpness of resonance is__________________?


aDirectly proportional to the damping force


bInversely proportional to the damping force


cEqual to the square of damping force


dEqual to the square of damping force



The phase of SHM describes________________?


aDisplacement only


b The direction of motion only


cBoth displacement and direction of motion


d Neither displacement nor direction of motion



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


amg sin θ


bmg sin θ


cmg cos θ


dmg cos θ


View Answer mg sin θ

Which one does not work according to resonance ?


aT.V


bRadio


c Microwave oven


dBulb


View Answer Bulb

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


ax = x’


bx = x’/2


cx = x’/4


d x = x(2)’/2


View Answer x = x’/2

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


b45°


c90°


d180°


View Answer 90°

The length of the second pendulum is_________________?


a100 cm


b99 cm


c99.2 cm


d98 cm


View Answer 99.2 cm

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