1st Year Fsc Physics Online Test With Answers

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1st Year Fsc Physics Online Test

Sr. # Questions Answers Choice
1 Two tuning forks of frequencies 240 Hz and 243 Hz are sounded together, the number of beats per second is. Zero 2 3 4
2 On loading the prong of a tuning fork with wax, the frequency of sound. Increases Decreases Remains same First increases then decrease
3 Diffraction is a special type of Reflection Polarization Interference Refraction
4 When two identical waves superimposed, which can change. Wave length Frequency Velocity Amplitude
5 When two identical travelling waves are superimposed, velocity of resultant wave. Decreases Increases Remain same Becomes zero
6 Two waves of same frequency and moving in the same direction produces. Interference Diffraction Beats Stationary waves
7 The process followed by Newton for the determination of speed of sound in air is Adiabatic Isothermal Isobaric Isochoric
8 The speed of sound in ari at 0 oC is 332 ms-1, Then the speed at 40 oC will be 372 ms-1 356 ms-1 346 ms-1 332 ms-1
9 Velocity of sound is independent of Temperature Density Pressure Medium
10 When sound waves enter in different medium, the quantity that remains unchanged is. Intensity Speed Frequency Wave length
11 the velocity of sound is maximum at 20 oC in Lead Copper Glass Iron
12 Frequency range of hearing of cats is. 20-20000 Hz 10- 10000 Hz 60-20000 Hz 60-70000 Hz
13 the louder the sound, the greater will be its. Speed Frequency Amplitude Wave length
14 In which medium the speed of sound is greater. Oxygen Air Water copper
15 Speed of sound in aluminum at 20 oC is. 3600 m/s 5100 m/s 5130 m/s 3500 m/s
16 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
17 Sound wave can not be Reflected Refracted Diffracted Polarized
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