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

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Physics
Dynamo is a device for converting

Magnetic energy into electrical energy
Mechanical energy into electrical energy
Chemical energy into electrical energy
Heat energy into electrical energy

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