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Physics

Physics
Moment of inertia is:

Phasor
Tensor
Vector
Scalar

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Physics
Pieces of camphor placed on water move about rapidly. This is because of

Surface tension
Diffusion
Capillarity
Viscosity

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Physics
A hunter on the ground wishes to shoot a bird on a tree at a distance with his rifle. He has to point the rifle

At the lower elevation than the bird
Vertically upwards
In the same direction as the bird
At a higher elevation than the bird

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Physics
The speed of sound in air depends on

None of these
Temperature
Wavelength
Frequency

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Physics
Which of the following is a compound machine?

Knife
Bicycle
Screw
Ramp

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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
2P
< P
> P

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