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Physics

Physics
The unit of energy in MKS system is

Ohm
Volt
Erg
Joule

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Physics
The Law of Kepler is related with which among the following ?

Planetary Motion
Law of Conservation of energy
Law of Gravitation
None

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Physics
Which, of the following radiations has the least wavelength ?

G-rays
X-rays
A-rays
B-rays

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Physics
As we go from Equator to North pole the value of ''g', the acceleration due to gravity

Decreases
None of these
Remains the same
Increases

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Physics
Energy per unit volume is dimensionally equal to

Pressure
Density
Force
Work

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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
> P
2P

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