Gravity is the strongest out of the four forces
Strong nuclear force holds protons and neutrons inside the nucleus of an atom
Weak nuclear force causes radioactivity
Electromagnetism acts only on particles with an electric charge
The Laser is a beam of radiations which are
The latent heat of fusion of ice is _ cal/g.
The law of definite proportions was stated by
The law which states that wave-length of maximum radiation is inversely proportional to the absolute of the emitting body is known as
The Leaning Tower of Pisa does not fall because
The least penetrating power ray is
The Length of the Day is determined in
The lens used in a simple microscope is
The light rays used for eliminating bacteria
The lightest radioactive element is