Physics Fsc Part 1 Chapter 8 Online Test With Answers

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Physics Fsc Part 1 Chapter 8 Online Test

Sr. # Questions Answers Choice
1 Frequency range of hearing of cats is. 20-20000 Hz 10- 10000 Hz 60-20000 Hz 60-70000 Hz
2 the louder the sound, the greater will be its. Speed Frequency Amplitude Wave length
3 In which medium the speed of sound is greater. Oxygen Air Water copper
4 Speed of sound in aluminum at 20 oC is. 3600 m/s 5100 m/s 5130 m/s 3500 m/s
5 Teh speed of sound in air is 340 m/s. If the pressure of air is doubled then the speed becomes. Double Half Four times Remains same
6 Sound wave can not be Reflected Refracted Diffracted Polarized
7 The error in speed of sound calculated by Newton at STP is about. 0 % 14 % 15 % 16 %
8 Speed of sound in copper is 38000 ms-1 3600 ms-1 3500 ms-1 3400 ms-1
9 With increase of temperature, speed of sound. Remains constant Becomes zero Decreases Increases
10 If the pressure of a gas is doubled, then speed of sound is. Doubled Become half Not affected Increases by four times
11 Increase in speed of sound for 1 oC rise in temperature is. 0.61 ms-1 0.61 cms-1 61 ms-1 6.1 ms-1
12 The speed of sound in air would become double than ots speed at 10 oC at a temperature of. 313 <sup>o</sup>C 586 <sup>o</sup>C 859<sup> o</sup>C 899 <sup>o</sup>C
13 Sound travel faster in CO2 H2 O2 He
14 The speed of sound in air does not depend upon Temperature Pressure Density Medium
15 Increase in the velocity of sound in air for 1 oC rise in temperature is. 61 ms-1 0.61 ms-1 161 ms-1 261 ms-1
16 The speed of sound is greater in solids due to their high. Density Pressure Temperature Elasticity
17 The speed \velocity of sound is greatest in. Air Steel Ammonia Water
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