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Physics

Physics
The frequency used in TV and radar system lies in

VHF
SHF
UHF
HF

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Physics
When light passes from one medium to another, this phenomenon of change in its direction is called ________

No option is correct
Diffraction
Propagation
Refraction

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Physics
What is the resistance (in ohm) of an electrical component if a current of 0.1 A passes through it on application of 5 V of potential difference across it?

0.5
100
1
50

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Physics
Water will not be vapourised if

The temperature is 0°C
The humidity is 0%
The temperature is 100°C
The humidity is 100%

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Physics
An electric fuse is based on

All of these
The chemical effect of the current
The heating effect of the current
The magnetic effect of the current

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Physics
An object which absorbs all colours and reflects none appears:

White
Blue
Grey
Black

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