Light Class 7 MCQs Questions with Answers
I. Choose the correct option.
Question 1.
Which one of the following shows lateral inversion?
(a) Plane mirror
(b) Concave mirror
(c) Convex mirror
(d) Convex lens
Answer
Answer: (a) Plane mirror
Question 2.
Which of the following is used as a side view mirror?
(a) Plane mirror
(b) Concave mirror
(c) Convex mirror
(d) Convex lens
Answer
Answer: (c) Convex mirror
Question 3.
The path of the light is
(a) always a straight line
(b) a curved line
(c) a zig-zag line
(d) depends on the medium
Answer
Answer: (a) always a straight line
Question 4.
White light is composed of
(a) three colours
(b) seven colours
(c) five colours
(d) eight colours
Answer
Answer: (b) seven colours
Question 5.
A virtual image
(a) can be formed on the screen
(b) cannot be formed on the screen
(c) is formed only by the plane mirror
(d) is formed only by the convex mirror
Answer
Answer: (b) cannot be formed on the screen
Question 6.
The image formed by spherical mirror is virtual. The mirror will be
(a) concave
(b) convex
(c) either concave or convex
(d) none of these
Answer
Answer: (c) either concave or convex
Question 7.
The coloured band of light obtained by dispersion of light is called
(a) image
(b) spectrum
(c) convergence
(d) scattering
Answer
Answer: (b) spectrum
Question 8.
We can get an inverted image from
(a) both concave lens and convex lens.
(b) both concave mirror and convex mirror.
(c) both concave mirror and convex lens.
(d) both convex mirror and concave lens.
Answer
Answer: (c) both concave mirror and convex lens.
Question 9.
A convex lens is
(a) thick at centre
(b) thin at the centre
(c) thick at edges
(d) hollow at the centre
Answer
Answer: (a) thick at centre
Question 10.
The image that can not be obtained on a screen is called
(a) real image
(b) virtual image
(c) diminished image
(d) none of these
Answer
Answer: (b) virtual image
II. Fill in the Blanks
Question 1.
An image can be obtained on a screen is called a ………………. image
Answer
Answer: real
Question 2.
An image formed by ………………. lens cannot be obtained on a screen.
Answer
Answer: concave
Question 3.
………………. light deviates the least, while ………………. light deviates the more.
Answer
Answer: Red, violet
Question 4.
The outer surface of a flat steel plate acts as a ………………. mirror.
Answer
Answer: plane
Question 5.
The inner surface of the reflector of a torch acts as a ………………. mirror.
Answer
Answer: concave
Question 6.
A ………………. is a piece of any transparent material bound by two curved surfaces or by one curved and one plane surface.
Answer
Answer: lens
Question 7.
Convex mirrors are used as ………………. mirrors.
Answer
Answer: rear view
Question 8.
The image formed by a plane mirror is ……………….
Answer
Answer: virtual
Question 9.
The change of sides of an object and its mirror image is called ……………….
Answer
Answer: lateral inversion
Question 10.
The ray of light which falls on the smooth polished surface is called ………………. ray of light.
Answer
Answer: incident
III. True or False
Question 1.
The image formed by a convex mirror is erect.
Answer
Answer: False
Question 2.
The image formed by a concave mirror is formed on the screen.
Answer
Answer: True
Question 3.
The image formed by a plane mirror is real.
Answer
Answer: False
Question 4.
The change of sides of an object and its mirror image is called lateral inversion.
Answer
Answer: True
Question 5.
The image formed by plane mirror is erect.
Answer
Answer: True
Question 6.
When the reflecting surface of the spherical mirror is curved inwards, it is called concave mirror.
Answer
Answer: True
Question 7.
A concave mirror forms a virtual and erect image.
Answer
Answer: True
Question 8.
Any polished or shining surface acts as a mirror.
Answer
Answer: True
Question 9.
A convex mirror always forms a real image.
Answer
Answer: False
Question 10.
The concave mirror is converging.
Answer
Answer: True
IV. Match the Following
| Column I | Column II |
| 1. Real image | (a) Upside down image |
| 2. Virtual image | (b) Upright image |
| 3. Inverted image | (c) Magnified image |
| 4. Erect image | (d) Deviates least |
| 5. Rainbow | (e) Deviates more |
| 6. Concave mirror | (f) Formed on the screen |
| 7. Red light | (g) Seven colours |
| 8. Convex lens | (h) Cannot be formed on the screen |
| 9. Violet light | (i) Virtual image |
| 10. Plane mirror | (j) Thinner at the edges |
Answer
Answer:
| Column I | Column II |
| 1. Real image | (f) Formed on the screen |
| 2. Virtual image | (h) Cannot be formed on the screen |
| 3. Inverted image | (a) Upside down image |
| 4. Erect image | (b) Upright image |
| 5. Rainbow | (g) Seven colours |
| 6. Concave mirror | (c) Magnified image |
| 7. Red light | (d) Deviates least |
| 8. Convex lens | (j) Thinner at the edges |
| 9. Violet light | (e) Deviates more |
| 10. Plane mirror | (i) Virtual image |
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