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Physics

Physics
Sound of frequency below 20 Hz is called

ultrasonic
infrasonic
audio sounds
supersonics

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Physics
Rocket works on the principle of

Newton's First Law
Newton's Third Law
Newton's Second Law
Archimedes Principle

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Physics
The device used to change the speed of an electric fan is

Regulator
Amplifier
Switch
Rectifier

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Physics
Which one of the following determines the sharpness of image in a camera ?

The focal length of the lens
The aperture
The exposure time
Size of the camera

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Physics
For photoelectric effect to take place, the metal used as the cathode should have ________

Low work function
Low melting point
High melting point
Low resistance

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Physics
One bar is equal to

104 Pa
103 Pa
106 Pa
105 Pa

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MORE MCQ ON Physics

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