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Physics

Physics
The value of coefficient of restitution in perfectly elastic collision is

2
1
0.5

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Physics
A parallel-plate capacitor,with air in between the plates, has capacitance C. Now the space between the two plates of the capacitor is filled with a dielectric of dielectric constant 7. Then the value of the capacitance will become

C
7C
C/7
14C

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Physics
Heat from the sun reaches earth by the process of

All of these
Radiation
Convection
Conduction

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Physics
Modem is used mostly for ?

A modern empty memory modules
Mostly for file system
Connecting to internet
All listed here

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Physics
Intensity of any wave is proportional to which of the following?

Cube of amplitude
Amplitude
Square of amplitude
Square root of amplitude

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Physics
Wollen clothes keep the body warm because

Wool is a bad conductor
Wool rejects heat from the outer objects
Wool increases the temperature of the body
Wool absorbs radiant heat from outer objects

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