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 A wave that consists of oscillations occurring perpendicular to the direction of energy transfer is called. Transvers wave Longitudinal wave Stationary wave Shock wave
2 A disturbance that travels through space and time usually accompanied by energy transfer is called. sound Wave Echo Frequency
3 In case of stationary waves every particle of the medium has fixed Velocity Displacement Amplitude Phase
4 Distance between two consecutive nodes or antinodes is equal to. Lamda /4 Lamda Lamda /2 2 lamda
5 What will be the effect on the speed of a Transerv wave in a string. If tension is made 4 times. Remains the same Increase a times Becomes double Becomes 3 times
6 If the wavelength of a wave is 1 cm and its period is 0.02 s , velocity of the wave will be 20 cm s-1 50 m s-1 60 cm s-1 100 cm s-1
7 A wave reflected from the boundary of a rarer medium will have phase change 0 <sup>o</sup> 60 <sup>o</sup> 90 <sup>o</sup> 180 <sup>o</sup>
8 A wave reflected from the boundary of a denser medium will have phase change 45 <sup>o</sup> 60<sup> o</sup> 90 <sup>o</sup> 180 <sup>o</sup>
9 A large ripple tank with a vibrator working at a frequency of 30 Hz produce 25 complete waves in a distance of 50 cm. The velocity of the wave is. 9.53 cm s-1 60 cm s-1 750 cm s-1 1500 cm s-1
10 Which of the following characteristics of a wave is independent of the others. speed Frequency Amplitude Wavelength
11 Which of the following devices can be used to produce both transvers and longitudinal waves. A string A ripple tank a helical spring A turning fork
12 In vacuum all electromagnetic waves have the same. Frequency Amplitude Speed Wavelength
13 Which of the following is a method of energy transfer. Conduction Wave motion Radiation All of these
14 Waves transfer Frequency Velocity Energy Wavelength
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