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Physics

Physics
Which term is not associated with sound wave?

Candela
Hertz
Mach
Decibel

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Physics
Optical fiber works on the principle of

Total internal reflection
Interference
Scattering
Refraction

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Physics
A person can jump higher on the moon's surface than on the earth because :

The acceleration due to gravity in moon is smaller than that on the earth.
The moon has no atmosphere
The moon is cooler than earth
The moon's surface is rough

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Physics
Planck's constant has the dimensions of :

Angular momentum
Force
Energy
Linear momentum

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Physics
Large transformers, when used for some time, become very hot and are cooled by circulating oil. The heating of the transformer is due to:

Both the heating effect of current and hysteresis loss
Intense sunlight at noon
The heating effect of current alone
Hysteresis loss alone

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Physics
Sound becomes hazardous noise pollution at decibels?

Above 120 db
Above 50 db
Above 30 db
Above 80 db

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MORE MCQ ON Physics

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