Question # 1

Diffraction of wave can be observed clearly only when the size of slit or obstacle is nearly__________ to the wavelength of the wave:

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Two times

Equal

Four times

None of these

If a wave moves in a slinky spring with frequency of 4Hz and wave length of 0.4m, the speed of the wave will be:

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1.0 ms-1

1.2 ms-1

1.4 ms-1

1.6 ms-1

The vacuum all electromagnetic wave have the same

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speed

frequency

amplitude

wavelength

Program up gradation refers to:

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Program enhancement

Program identification

Program development

Program implementation

Which of the following is a method of energy transfer.

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Conduction

Reatiation

wave motion

all of these

The oscillations of a system in the presence of _____________ force are called amp oscillations:

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Resistive force

Attractive force

Both of these

None of these

The number of wavelength of waves passing through a point in one secnd is called:

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Time period

Cycle

Frequency

None of these

At extreme position potential energy of the pendulum is

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Maximum

Miimum

a and b

zero

A device which has two ways of communication is:

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television

radio

hard disk

mobile phone

The product of frequency (f) and wavelengthλ is equal to:

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Time period

Amplitude

Wave speed

Wave energy / frequency

The distance between two consecutive troughs or crests is called:

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wavelength

Frequency

Time period

None of these

Shock absorbers in automobiles are one practical application of:

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SHM

Random motion

Damped motion

None of these

The waves, which are used to detect the broken bones, are called:

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Light waves

x-rays

Sound waves

both b,c,

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Physics 10th Class English Medium Unit 1 Online Test MCQs With Answers

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