A rigid body of mass 2 kg is dropped from a stationary balloon kept at a height of 50 m from the ground. The speed of the body when it just touches the ground and the total energy when it is dropped from the balloon are respectively. (Take, acceleration due to gravity, g = 9.8 m/s²)

The temperature of a place on one sunny day is 113 in Fahrenheit scale. The Kelvin scale reading of this temperature will be

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.