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Physics

Physics
Sound following a flash of lightning is called

Cloud clash
Thunder
Stoning
Bolting

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Physics
The width of depletion layer of a P-N junction

Is independent of applied voltage
Decreases with light doping
Increases with heavy doping
Is increased under reverse bias

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Physics
When hot liquid is poured into a thick glass tumbler, it cracks because glass :

Has low temperature coefficient of expansion
Has high temperature coefficient of expansion
Is a bad conductor of heat so only inner surface expands
Has a very low specific heat

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Physics
The purpose of choke in a fluorescent lamp is :

To decrease the current flow
Ro decrease the voltage momentarily
To decrease the resistance
To increase the current flow

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Physics
Speed of sound is maximum in which among the following?

Vaccum
Solids
Gases
Liquids

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Physics
An object that has kinetic energy must be

At an elevated position
Moving
At rest
Falling

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MORE MCQ ON Physics

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