Question

1. Explain why a pencil half submerged in water in an inclined position appears bent at the
surface of water
2. Describe dispersion of light. Why does it take place?
3. What is meant by spectrum of light? Name the colours in a spectrum in their respective order.






​

Answer 1

Answer:

Hi there!!

Explanation:

happy helping

1) This is due to refraction occuring due to refractive index variation.

2) dispersion is the phenomenon in which the phase velocity of a wave depends on its frequency.

Dispersion of light occurs when white light is separated into its different constituent colors because of refraction and Snell's law.

3)The EM spectrum is generally divided into seven regions, in order of decreasing wavelength and increasing energy and frequency. The common designations are: radio waves, microwaves, infrared (IR), visible light, ultraviolet (UV), X-rays and gamma rays.

Answer 2

Answer:

1 due to refraction of light

2 splitting of white light into its constuent colours I.e.

3 the band of 7 colours

( VIBGIOR)

hope it helps