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 In an oscillating system damping means reduction in Frequency Wavelength Amplitude Period
2 Wave motion in air consist of Longitudinal waves Transverse waves Seismic waves Polarized waves
3 Which effect explain the frequency shift that occurs when there is motion sound a listener or both relative to the medium. Early effect Doppler's effect Hall effect Zeeman effect
4 The heat frequency is the Sum of the two frequenceis Produce of the two frequency Difference of the two frequencies Ratio of the two frequencies
5 Which analysis is employed to convert a complex sound into notes. Fourier theorem Milleman theorem Lissajoes theorem Demorgan's law
6 Which effect produce ultrasonic is quartz. Pyroelectric effect Piezoelectric effect Hall effect Magnetostriction effect
7 Hearing damage is possible at sound pressure of 0 dB 50 dB 130 dB 195 dB
8 Which technique uses underwater sound propagation to detect and locate submerged objects. RADAR LIDAR SONAR LASER
9 The perceived fundamental frequency of a sound is called. Pitch Timber Loudness Wavelength
10 The addition of two or more waves is termed as Interferences Period Echo Polarization
11 The phase velocity is the velocity of a point that moves with a wave at constant phase it is also called.

 Phase speed Wave speed Wave velocity All of these
12 The average amount of energy transported by a wave per unit area per unit time is termed as Wave speed Wave intensity Wavelength Wave amplitude
13 The speed of a sound wave is independent of Nature of medium Pressure Temperature Mass and energy
14 When stationary waves are formed in a closed organ pipe. A node is formed at the closed end of the pipe An antinode is formed at the closed end of the pipe Each particle at the node experience zero acceleration The maximum pressure occurs at the nodes
15 A wave source of frequency 1000 Hz emits waves of wavelength 0.1 m How long does is take for the waves to travel 2500 m. 20 s 25 s 40 s 100 s
16 A cork moes at 5 m s-1 on the crest of a wave The distance between the crests is 10 m. The frequency of the wave motion is. 0.5 Hz 1.0 Hz 2.0 Hz 5.0 Hz
17 When two identical travelling waves are superposed, velocity of the resultant wave Remains unchanged Decreases Increases Become zero
18 The energy transmitted per second though unit are held perpendicular to the direction of propagation of the wave is called. Intensity of sound Pitch of sound Loudness of sound Quality of sound
19 The wavelength is the distance along the line of wave propagation between two successive particles which have equal Velocities Phases Amplitude Displacements
20 The velocity of sound will be greater in. Air Water Solids Vacuum
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