Physics
If the wavelengths corresponding to ultraviolet, visible and infrared radiations are given as lUV, lVIS and lIR respectively, then which of the following gives the correct relationship among these wavelengths?

LUV < lVIS < lIR
LUV > lIR > lVIS
LUV > lVIS > lIR
LUV < lIR < lVIS

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Physics
A stone floor feels cold to the bare feet but a carpet on the same floor feels warm. This is because

The stone conveys the heat away from the feet more rapidly than the carpet
The floor and carpet are at different temperatures
The human body maintains a constant temperature
The carpet is a better conductor of heat than the stone

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Physics
The Hooke's law is valid for

Elastic as well as plastic region of the stress strain curve
Entire stress strain curve
Only proportional region of the stress strain curve
Entire elastic region of the stress strain curve

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