PPSC Physics Chapter 5 Waves and Wave Properties of Light With Answers

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PPSC Physics Chapter 5 Waves and Wave Properties of Light

Sr. # Questions Answers Choice
1 Beats are the result of. Interference Doppler's effect Ultrasound Polarization
2 Doppler's effect can be applied to. Light wave only sound wave only Both light waves and sound waves Study various features of a wave
3 With the increase of temperature, teh pitch of an organ pipe Increase Descrease Remain the same May increase or decrease
4 In a spectrometer experiment monochromatic light is incident normally on a diffraction gratin having 4.5 x 105 lines per metre The second order line is seen at an angle of 30 o to The normal What is the wavelength of the light. 430 nm 556 nm 589 nm 625 nm
5 Velocity of sound in any medium deepness upon. Elasticity Density Volume Mass
6 Velocity of sound in air at a given temperature. Increases with increase in pressure Decrease with increases in pressure Is independent of pressure Becomes quadruples
7 When a sound source moves towards a stationary observer there is. An apparent increase in wavelength An apparent increase in frequency an apparent decreases in frequency A change in the velocity of the sound
8 The ripple tank is used to study various features of Wave phenomenon Interferences Doppler's effect Reverberation
9 Which of the following phenomenon occurs when two sound waves of equal amplitude and different frequencies travel through the same region. Resonance Doppler's effect Beats Echo
10 In solid and liquids the variation of the speed of sound with temperature is. Much greater than in air Slightly les than in air The same as in air Smell and usually negligible
11 The variation in the speed of sound with temperature is greater in. Gases Metals Liquids Insulators
12 The sweetness or harshness of a sound depends upon its Wavelength Frequency Amplitude Regularity
13 The pitch of sound depends on its Wavelength Frequency Wave amplitude Harmonic content
14 The loudness of a sound depends on its Wavelength Frequency Wave amplitude Regularity
15 The loudness of a sound deepness on its Wavelength Frequency Wave amplitude Regularity
16 Which of the following are examples of transverse and a longitudinal wave. Radio and sound waves Radio and light waves Light and water ripples Light and sound waves
17 The velocity of the wave could be increased by Reducing the amplitude Decreasing the frequency Increasing the period Stretching the spring more
18 The amplitude of sound wave determines its Pitch Loudness Reverberation Interference
19 The quality of sound Decreases with pitch Varies directly as its pitch Varies inversely as its pitch Depends upon the overtones present there
20 The pitch of sound a determined by its Speed Frequency Direction Number of beats
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