1.A laser emits light of frequency 9.46 x 1015 sec-1. What is the wavelength of the light? 2.A certain electromagnetic wave has a wavelength of 4.35 x10-8m. What is the frequency of the wave?

3.Calculate the energy, in joules, of a single photon associated with frequency of 8.00x1016sec-1.

4.Calculate the Energy, of radio wave with a wavelength of 6.6 X 10-9m

5.Arrange the following in increasing order of Frequency.

Ultraviolet rays, Gamma rays, Radio Waves, Microwaves and Infra- red waves

6.Arrange the following in the decreasing order of Energy

Infrared Rays, Ultraviolet Rays, Microwaves, Radio Waves, and Gamma Rays

7.Which Electromagnetic Radiation has the longest wavelength.

Microwaves, Gamma Rays, or Radio Waves