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Physics

Physics
An object at rest may have

Momentum
Potential energy
Velocity
Kinetic energy

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Physics
Resistance of human body in dry condition

10 ohm
1000 ohm
10000 ohm
100000 ohm

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Physics
The minimum number of geostationary satellites needed for uninterrupted global coverage is :

3
2
1
4

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Physics
Which planet has the lowest density?

Neptune
Earth
Saturn
Jupiter

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Physics
Curie point is the temperature at which

Transmutation of metal occurs.
A metal loses conductivity
Matter becomes radioactive
A metal loses magnetic properties.

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Physics
A potentiometer wire is 100 cm long and a constant potential difference is maintained across it. Two cells are connected in series first to support one another and then in opposite direction. The balance points are obtained at 50 cm and 10 cm from the positive end of the wire in the two cases. The ratio of the emf's is :

0.21111111111111
0.12777777777778
0.20902777777778
0.12638888888889

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