Which of the following are true regarding transmission of television programmes?
1.Picture is transmitted with the velocity of light
2.Sound is transmitted with the velocity of sound
3.Sound is transmitted with the velocity of light
4.Different colors of the pictures are transmitted with different velocities

Suppose a rocket ship is receding from the earth at a speed of 2/10th the 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?

A parachutist jumps from a height of 5000 m. The relationship between his falling speed, v and the distance fallen through, d is best represented as

Assertion (A): A diamond will shine more than a glass imitation cut to the same shape.
Reason (R) : The refractive index of diamond is less than that of glass.In context of the above two statements, which one of the following is correct?

When a mirror is rotated by an angle θ, the reflected ray will rotate by

An air bubble in water will act like a

Match List I (Quantity) with List II (Units) and select the correct answer using the codes given below the lists

Cryogenic engines find applications in

When the same note is played on a sitar and a flute, the sound produced can be distinguished from each other because of the difference in

The technique used to transmit audio signals in television broadcasts is