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

2p/ 3
P
3P
P/3

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Physics
Two identical solid pieces, one of gold and other of silver, when immersed completely in water exhibit equal weights. When weighed in air (given that density of gold is greater than that of silver)

The silver piece will weigh more
Both silver and gold pieces weigh equal
The gold piece will weigh more
Weighing will depend on their masses

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Physics
Which statement best describes an igneous intrusion?

Magma is injected into surrounding rock forming an igneous intrusive
Igneous intrusion for when ice crystals splash into lava
Magma explodes to the surface and forms a smooth outer layer of rock
Magma is exported to an open area and forms iron

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Physics
Why does the sea appear blue in colour?

Refraction of the sun light
Reflection of the sun light from water surface
Interference of the sun light from water surface
Scattering of the sunlight by water molecules

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