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Physics

Physics
What is the source of energy for the water cycle?

Sun
Rain water
Animals
Clouds

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Physics
In general, which is the cause of a sea breeze?

Specific heat
All listed here
Pressure
Heat

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Physics
A wire of copper having length I and area of cross-section A is taken and a current i is flown through it. The power dissipated in the wire is P. If we take an aluminium wire having same dimensions and pass the same current through it, the power dissipated will be

> P
< P
2P
P

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Physics
Which of the following scientific discoveries was made by C.V. Raman?

Controlled nuclear fission
Inelastic scattering of light by molecules
Super Conductivity
Cyclotron

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Physics
One thousand microns is equal to

10-12m
10-9m
10-6m
10-3m

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Physics
The point where total mass of a body is supposed to be concentrated is known as

Centre of gravity
Centre of mass
Centre of motion
Dead centre

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