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Physics

Physics
Speed of sound is the greatest in :

Glass
Water
Glycerine
Air

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Physics
Which one of the following is used for sun glasses ?

Crooks glass
Crystal glass
Pyrex glass
Flint glass

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Physics
The velocity of heat radiation in vacuum is

Less than that of light
Equal to that of sound
Equal to that of light
Greater than that of light

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Physics
If objects appear enlarged and inverted in a rear view mirror, then which type of mirror is used?

Cylindrical
Convex
Plane
Concave

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Physics
The type of mirrors used in the headlamp of cars is

Parabolic concave
Cylindrical concave
Spherical convex
Plane

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Physics
Bats can sense obstacles because they produce

Supersonic sound waves
Micro sound waves
Infrasonic sound waves
Ultrasonic sound waves

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MORE MCQ ON Physics

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