Question

Statements given below are incorrect. Write the correct statements.

1) Ray of light which bounces off of the surface of a plane mirror is called incident ray.
2) Image formed in a plane mirror is always inverted.
3) Kaleidoscope is used by barbers to show the back of the head.
4) During dispersion, any kind of of light splits into seven colours.
5) Sclera is a grey membrane, which darkens the eyeball from inside.
6) In order to remove long-sightedness a convex lens is used.
7) Poor vision is caused to the deficiency of Vitamin C. ​

Answer 1

Answer:

7

Explanation:

because seven number sentence is in correct

Answer 2

Answer:

Explanation:

1) Ray of light which bounces off of the surface of a plane mirror is called reflecting ray.

2) Image formed in a plane mirror is always virtual image.

3) Kaleidoscope is used by fashion designers for making different patterns

4) During dispersion, white light splits into seven colours.(through a glass prism it splits into its spectrum of colours)

5) Sclera is a white membrane, which darkens the eyeball from inside.

(Sclera is the white membrane which lines the eyeball. It is the supporting wall of the eye and acts as a protective coating. It is seen in contrast with the iris.)

6) In order to improve long-sightedness a convex lens is used.

7) Poor vision is caused to the deficiency of Vitamin A