Physics
A body of mass 2 kg is thrown upward with initial velocity of 20 m/s. After 2 seconds, its kinetic energy will be : (g = 10 m/s2)

100 J
400 J
200 J
0 J

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Physics
What is a compound microscope?

A microscope that has two sets of lenses : an occular lens and an eyepiece.
A microscope whose lenses are concave.
A microscope that has one lens.
A microscope whose lenses are convex.

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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 show interference and diffraction.
Electromagnetic waves are transverse waves
Electromagnetic waves do not require a medium to propagate.

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