Radiations coming from the sun are mostly in the form of

Which of the following are the characteristics of electromagnetic waves ?

1. They are elastic waves.

2. They can also move in vacuum.

3. They have electric and magnetic components which are mutually perpendicular.

4. They move with a speed equal to 3 lakh meters per second.

Select the correct answer using the codes given below.

The light energy escaping from the sun can be spread by

The correct sequence of energy transfer that occurs when an apple falls to the ground is