the intensity of light emitted by them changes with time.
the distance of the stars from the earth changes with time.
the refractive index of the different layers of the earths atmosphere changes continuously.
None of these
Stars which appear single to the naked eye but are double when seen through a telescope are
Stationary wave is formed by
Steam at 100°C causes more severe burns than water at 100°C because
Steam at 1000C causes more severe burns than water at 100° C as
Steel is more elastic than Rubber because
Submerged objects can be located using
Submerged objects can be situated using
Suitable impurities are added to a semiconductor depending on its use. This is done in order to
Super conductivity is a phenomenon in which the resistance of a substance
Super conductors are substances that