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Chapter 6: Oscillations and Waves

60 Questions 60 Minutes Pass: 60%
1 The to and from motion of a body about its mean position is called
2 According to Hooke`s law, the extension produced in a spring is proportional to the
3 The motion of a simple pendulum is
4 In S.H.M., the acceleration is directly proportional to the
5 In S.H.M., the acceleration is always directed towards the
6 The projection of motion of a body moving in a circular path is
7 The time required to complete one vibration is called
8 Energy of a particle executing S.H.M. is always
9 The time period of a simple pendulum depends upon the ______ of the pendulum
10 The time period of a second pendulum is
11 If the length of a pendulum becomes four times, its time period will become
12 The relation between time period (T) and frequency (f) is
13 The P.E. of a particle executing S.H.M. is
14 The disturbance which travels along a medium is called
15 The point of maximum displacement below the equilibrium level is called
16 The closest distance between two similar points in a wave is called
17 The number of complete waves passing through a point in unit time is called
18 The relation between wave velocity (V), frequency (v), and wavelength (λ) is
19 A wave which is propagated perpendicular to the direction of propagation is called
20 When a string is plucked between two fixed supports, the wave developed is called
21 The point where the displacement is minimum in a standing wave is called a
22 The wave in which particles vibrate parallel to the wave direction is called
23 Sound waves having frequencies between 20Hz and 20,000Hz are called
24 The speed of sound in air at 0°C is
25 The speed of sound in air depends upon
26 The rate of flow of sound energy per unit area is called
27 The property of sound by which we distinguish shrill from grave sounds is called
28 The periodic rise and fall in sound intensity is called
29 The change in frequency due to relative motion between source and observer is called
30 If amplitude of a wave is doubled, its energy becomes ______ times
31 The distance between two consecutive nodes in a standing wave is
32 The distance between a node and adjacent antinode is
33 When two identical traveling waves superpose, the velocity of resultant wave
34 Wave transmit from one place to another
35 The speed of transverse waves along a string depends on
36 When two exactly similar waves travel in opposite directions, they produce
37 What represents longitudinal waves?
38 If wave period is 4 sec and speed is 8 m/s, its frequency is
39 A wave generator produces 20 waves in 4 sec. Its frequency is
40 A transverse wave has wavelength 1m and period 2 sec. Its speed is
41 When tension in a string increases four times, wave speed becomes
42 Beats result from
43 Speed of sound does not depend upon
44 We recognize voices by telephone due to sound`s
45 When temperature rises, sound speed increases because
46 The SI unit of intensity level is
47 When two vibrating systems have slightly different frequencies, they produce
48 The pitch of sound depends upon
49 Which are compressional waves?
50 The maximum number of beats/second humans can detect is about
51 Earthquake waves are examples of
52 When temperature increases by 10°C, sound speed increases by
53 Wavelength increases when
54 sound can`t propagate through
55 valocity of sound obtained from newton`s formula comes out be
56 For SHM, which expression is correct? (x = displacement)
57 If pendulum length increases, its time period will
58 A second pendulum on the moon (gₘ = g/6) will have period
59 In SHM, total energy is conserved because
60 At mean position in SHM, velocity is