1561. Oscillatory motion is a type of motion which is :
A. To and Fro
B. Vibratory motion
C. Periodic motions
D. All of these *
1562. The body oscillates due to a :
A. Applied force
B. Restoring force *
C. Frictional force
D. Air pressure
1563. In vibratory motion which parameter remains constant ?
A. P.E. Energy
B. K.E. Energy
C. Total Energy *
D. Angular Energy
1564. The vibrating bodies produce :
A. Sound
B. Waves
C. Disturbance
D. All of these *
1565. Hook’s law is defined as :
A. F and X are directly proportional *
B. F and X are inverse proportional
C. F and X has no relation
D. Product of F and X is proportional to friction
1566. The frequency of second pendulum is :
A. 1 Hertz
B. 2 Hertz
C. 1/2 Hertz *
D. None of them
1567. Which of the following factors imparts in simple harmonic motion:
A. Acceleration is directly proportional to displacement
B. Acceleration is directed towards the mean position
C. Acceleration produced is due to restoring force
D. All of the above *
1568. If a simple pendulum is shifted from Multan to mount everest , then its time period :
A. Increases *
B. Decreases
C. Remains constant
D. Becomes zero
1569. On vibration means, the motion of mas from its :
A. Means position to upper extreme position
B. Frome extreme position
C. From means position to back to its means position *
D. All of these
1570. Frequency is the term used for :
A. Number of vibration for second *
B. Time to take one vibration
C. Number of Vibrations per minute
D. None of these