Dispersion of White Light by Glass Prism

Q. The dispersion of white light when it passes through a prism shows that:

1. all colours in white light have the same speed.
2. white light is monochromatic.
3. the speed of light in a vacuum is a constant.
4. different colours have different indices of refraction in the prism.

Q.

Rakesh wanted to do the prism experiment, he took a prism and passed a monochromatic light through the prism. Which of the following phenomenon would he observe?

1. Dispersion

2. Refraction

3. Diffraction

4. Reflection

Q.

Match the column:

1. i-a;ii-b; iii-c; iv-d

2. i-b;ii-d; iii-c; iv-a

3. i-b;ii-a; iii-d; iv-c

4. i-c;ii-b; iii-a; iv-d

Q.

Issac Newton was the first to obtain the spectrum of sunlight using a glass prism.

1. True

2. False

Q.

What is the order of the seven colours (from most deviated to least deviated) that we see after dispersion through a glass prism?

1. Violet, indigo, red, green, blue, orange, yellow

2. Violet, indigo, blue, green, yellow, orange, red

3. Red, orange, yellow, violet, indigo, blue, green

4. Red, yellow, indigo, blue, violet, green, orange

Q.

What is dispersion?

1. Bending of light in the same medium after hitting a polished surface.

2. Splitting of white light into 7 constituent colours .

3. Bending of light in diffrent medium.

4. Changing of original path of light when it hits tiny colloidal particles.

Q. After being dispersed from a prism, white light splits into seven colours. Which colour will be refracted the most?

1. Red
2. Green
3. Blue
4. Violet

Q. Consider the following statements:

1. White light on passing through a prism, disperses into seven colours, in a phenomenon called dispersion.


2. Different wavelengths of light are refracted at different angles in the same medium.

1. Both the statements are correct, and 2 is not the correct reason of 1.

2. Both statements are wrong.
3. Both the statements are correct, and 2 is the correct reason of 1.
4. Statement 1 is correct but statement 2 is not.

Q. If the white ray falls on the system arranged in the given way, then what will be the colour of the output light coming from the third prism?

1. Only violet colour
2. 7 different colours
3. Only yellow colour
4. Only red colour

Q.

The process by which a beam of white light splits into its constituent colours is known as

1. Convergence

2. Dispersion

3. Divergence

4. Reflection