871. In vibratory motion
A. P.E. remains constant
B. K.E. remain constant
C. total energy remains constant
D. total momentum remains constant
872. The waveform of S.H.M. is
A. Standing wave
B. Sine wave
C. Square wave
D. None
873. S.I unit of frequency is
A. Vibration S-2
B. Radian
C. Hertz
D. ms-1
874. In S.H.M. the velocity of a particle is maximum at
A. mean position
B. extreme position
C. middle between the mean and extreme position on the right side
D. middle between the mean and extreme position on the left side
875. The acceleration of a projection on the diameter for a particle moving along a circle is
A. w2x
B. wx2
C. w2x
D. wx2
876. The total energy of a body executing S.H.M is directly proportional to
A. The square root of amplitude
B. The amplitude
C. Reciprocal of amplitude
D. Square of an amplitude
View Answer
877. The time period of a second pendulum is
A. 4 seconds
B. 3 seconds
C. 2 seconds
D. 6 seconds
878. The length of the second pendulum is
A. 100 cm
B. 99 cm
C. 99.2 cm
D. 98 cm
879. If the length of the second pendulum becomes four times, then its time period will become
A. 4 times
B. 6 times
C. 8 times
D. 2 times
880. The force responsible for the vibratory motion of the simple pendulum is
A. mg cosθ
B. mg sinθ
C. mg tonθ
D. mg