The process in which heat is transmitted without the aid of the intervening medium is
Answer : C. Radiation
When a mirror is rotated by an angle of θ, the reflected ray will rotate by
Answer : D. 2θ
Sound is not audible in moon. Why?
Answer : B. moon does not have atmosphere
Heat waves are otherwise known as
Answer : C. Solar radiation
Light from the Laser is
Answer : A. Monochromatic
suppose a rocket ship is receding from the earth at a speed of 1/10 of velocity of light. A light in the rocket ship appears blue to the passengers on the ship. What colour would it appear to an observer on the earth?
Answer : C. yellow