Alight wave travels at a speed of 3.0 × 108 meters/second. if the wavelength is 7.0 × 10-7 meters, what is the frequency of the wave?

Answer : The frequency of the wave is,

Solution : Given,

Speed of light =

Wavelength of light =

Formula used :

= frequency of light

= wavelength of light

c = speed of light

Now put all the given values in the above formula, we get the frequency of light.

Therefore, the frequency of the wave is,

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.