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Physics

Physics
The substance which conducts current in the solid state is

Graphite
Sodium chloride
Diamond
Iodine

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Physics
It is easier to carry two buckets of water in one hand each, than to carry only one in one hand because

Centre of gravity and centre of equilibrium fall within the feet
Centre of gravity falls within the body
Weights of buckets are balanced
Resultant weight of buckets is zero

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Physics
Suppose voltage V is applied across a resistance R. The power dissipated in the resistance is P. Now the same voltage V is applied across a parallel combination of three equal resistors each of resistance R. Then the power dissipated in the second case will be

P
P/3
2p/ 3
3P

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Physics
Brightness of bulb depends on voltage or current?

Both A & B
None
Voltage
Current

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Physics
Which of these is not a simple machine?

A pair of scissors
A lever
The pulley
A ramp

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Physics
What factors contribute to global winds?

All of these
Uneven warming of the earth by the sun
Coriolis Effect
Convection Cells

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