Question # 1

The waves in which particles of the medium vibrate perpendicular to the direction of waves are:

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Electromagnetic waves

Sound waves

Both a and b

Transverse waves

The S.I unit of intensity of sound is:

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Wm

Wm2

Wm-2

Wm-1

The distance between two consecutive compressions or rarefactions in longitudinal waves is called:

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Amplitude

Wavelength

Half wavelength

1/4 wavelength

the water waves after striking the hurdle will:

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reflect

refract

diffract

all a b and c

When a body moves to and fro about a point, its motion is called:

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Random motion

Vibratory motion

Linear motion

Rotatory motion

The sound level of rustling of leave is:

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1 dB

20 dB

30 dB

10 dB

The water waves obey the laws of:

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Reflection

Refraction

Diffraction

All of these

When frequency of sound wave is increased, which of the following decreases?

i) Wavelength ii) Period iii) Amplitude

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i only

(iii) only

i and ii only

i and iii only

Time period is reciprocal of:

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Frequency

Cycle

Wave-length

Amplitude

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Physics 10th Class English Medium Unit 2 Online Test MCQs With Answers

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