FSC Physics MCQs Part 1 Physics Part 2 HSSC Pre Medical Pre Engineering text Book Questions first year and second-year Physics mcqs

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The waves that require a material medium for their propagation are called
A. matter waves B. electromagnetic waves
C. carrier waves D. mechanical waves
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[explanation]D[/explanation]
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When two identical traveling waves are superimposed, the velocity of the resultant wave
A. decreases B. increases
C. remains unchanged D. becomes zero
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[explanation]C[/explanation]
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If stretching force T of wire increases, then its frequency
A. decreases B. increases
C. remains the same D. any of above
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[explanation]B[/explanation]
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[question]
It is possible to distinguish between transverse and longitudinal waves form the property of
A. refraction B. polarization
C. interference D. diffraction
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[explanation]B[/explanation]
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Sound waves do not travel in vacuum because
A. they are transverse waves B. they are stationary waves
C. they require material medium for propagation D. they do not have enough energy
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[explanation]C[/explanation]
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[question]
Increase in velocity of sound in the air for 1 ?C rise in temperature is
A. 1.61 ms-1 B. 61.0 ms-1
C. 0.61 ms-1 D. 2.00 ms-1
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[explanation]C[/explanation]
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[question]
On loading the prong of a tuning form with wax its frequency
A. increases B. decreases
C. remains unchanged D. may increase or decrease
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[explanation]B[/explanation]
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[question]
The normal ear is the most sensitive in the frequency range
A. 20000 to 30000 hertz B. 10 to 20 hertz
C. 2000 to 4000 hertz D. 6000 to 8000 hertz
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[explanation]C[/explanation]
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[question]
Ultrasonic have
A. frequency in the audible range B. frequency is greater than 20 kHz
C. frequency lower than 20 Hz D. all of above
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[explanation]B[/explanation]
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The number of beats produced per second is equal to
A. the sum of the frequencies of two tuning forks B. the difference of the frequencies of two tuning forks
C. the ratio of the frequencies of two tuning forks D. the frequency of either of the two tuning forks
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[explanation]B[/explanation]
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