1. . Time period of simple pendulum is:
(A) π
(B) √(l/g)
(C) 2π√(l/g)
(D) π√(g/l)
2. . Which of the following substance has relatively high value of elasticity?
(A) Rubber
(B) Steel
(C) Air
(D) Gold
3. . The waveform of S.H.M is similar to:
(A) Cosine wave
(B) Sine wave
(C) Pulsed waves
(D) Square wave
4. . The maximum distance of a vibrating body from mean position is called:
(A) Time period
(B) Displacement
(C) Amplitude
(D) Frequency
5. . Time period of a second’s pendulum is:
(A) Zero
(B) 1 second
(C) 2 seconds
(D) 3 seconds
6. . The frequency of second’s pendulum is:
(A) 1 Hz
(B) 2 Hz
(C) 0.5 Hz
(D) 0.25 Hz
7. . The length of second’s pendulum is:
(A) 1 m
(B) 0.5 m
(C) 0.6 m
(D) 0.992 m
8. . In a vibrating string, the points where the amplitude is maximum are called:
(A) Crest
(B) Trough
(C) Antinode
(D) Node
9. . The distance between two consecutive nodes is:
(A) λ/4
(B) λ/2
(C) λ
(D) 2λ
10. . The wavelength of the fundamental mode of vibration in a string is:
(A) l
(B) 2l
(C) 4l
(D) l/2
11. . The unit of stress is:
(A) N/m
(B) N/m²
(C) Newton
(D) Joule
12. . The example of S.H.M is:
(A) Motion of a train
(B) Motion of a fan
(C) Motion of a simple pendulum
(D) Motion of a wheel
13. . In S.H.M, the acceleration is always towards:
(A) Right side
(B) Left side
(C) The center
(D) None
14. . In S.H.M which form of energy is maximum at the center?
(A) Rotational energy
(B) Vibrational energy
(C) Kinetic energy
(D) Potential energy
15. . The time period of simple pendulum depends upon:
(A) Mass
(B) Weight
(C) Length
(D) Amplitude
16. . The frequencies other than fundamental frequency are called:
(A) Harmonics
(B) Triangle
(C) Crest
(D) Amplitude
17. . The distance between a node and an antinode is:
(A) 0.25λ
(B) 0.5λ
(C) λ
(D) 2λ