Physics
The splitting of white light into its components is due to:

Transmission
Reflection
Refraction
Dispersion

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Physics
Which one of the following is not a property of electromagnetic waves?

Oscillating electric field and magnetic field are perpendicular to each other.
Electromagnetic waves do not require a medium to propagate.
Electromagnetic waves do not show interference and diffraction.
Electromagnetic waves are transverse waves

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Physics
The earth is a

Good absorber and good radiator of heat
Non-absorber of heat
Good reflector of heat
Bad absorber and bad radiator of heat

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