Plane Mirror vs Concave Mirror vs Convex Mirror : āϏāĻŽāϤāϞ āĻĻāĻžāĻĒā§āύ āĻŦāύāĻžāĻŽ āĻ ā§ąāϤāϞ āĻĻāĻžāĻĒā§āύ āĻŦāύāĻžāĻŽ āĻāϤā§āϤāϞ āĻĻāĻžāĻĒā§āύ
1. Plane Mirror (āϏāĻŽāϤāϞ āĻĻāĻžāĻĒā§āύ): Has a flat reflecting surface. āϏāĻŽāϤāϞ āĻĒā§ā§°āϤāĻŋāĻĢāϞāĻ āĻĒā§āώā§āĻ āĻĨāĻžāĻā§āĨ¤
2. Concave Mirror (āĻ ā§ąāϤāϞ āĻĻāĻžāĻĒā§āύ) : Has an inward curved reflecting surface. āĻĒā§ā§°āϤāĻŋāĻĢāϞāĻ āĻĒā§āώā§āĻ āĻāĻŋāϤ⧰āĻĢāĻžāϞ⧠āĻŦāĻžāĻāĻāĻž āĻĨāĻžāĻā§āĨ¤
3. Convex Mirror (āĻāϤā§āϤāϞ āĻĻāĻžāĻĒā§āύ): Has an outward curved reflecting surface. āĻĒā§ā§°āϤāĻŋāĻĢāϞāĻ āĻĒā§āώā§āĻ āĻŦāĻžāĻšāĻŋā§°āĻĢāĻžāϞ⧠āĻŦāĻžāĻāĻāĻž āĻĨāĻžāĻā§āĨ¤
These mirrors differ in shape and the way they form images. āĻāĻ āĻĻāĻžāĻĒā§āύāϏāĻŽā§āĻšā§° āĻāĻā§āϤāĻŋ āĻā§°ā§ āĻĒā§ā§°āϤāĻŋāĻā§āĻāĻŦāĻŋ āĻāĻ āύ⧰ āϧ⧰āĻŖ āĻŦā§āϞā§āĻ āĻŦā§āϞā§āĻ
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MCQs
1. Which mirror has a flat reflecting surface ? āĻā§āύāĻā§ āĻĻāĻžāĻĒā§āύ⧰ āĻĒā§ā§°āϤāĻŋāĻĢāϞāĻ āĻĒā§āώā§āĻ āϏāĻŽāϤāϞ ?
A) Concave Mirror | B) Convex Mirror | C) Plane Mirror | D) Spherical Mirror
Ans: C) Plane Mirror
Explanation: A plane mirror has a flat reflecting surface and forms a virtual, erect image of the same size. āĻŦā§āϝāĻžāĻā§āϝāĻž: āϏāĻŽāϤāϞ āĻĻāĻžāĻĒā§āύ⧰ āĻĒā§ā§°āϤāĻŋāĻĢāϞāĻ āĻĒā§āώā§āĻ āϏāĻŽāϤāϞ āĻšāϝāĻŧ āĻā§°ā§ āĻ āϏāĻŽāĻžāύ āĻāĻāĻžā§°ā§°, āĻĨāĻŋāϝāĻŧ āĻā§°ā§ āĻ ā§ąāĻžāϏā§āĻ¤ā§ą āĻĒā§ā§°āϤāĻŋāĻā§āĻāĻŦāĻŋ āĻāĻ āύ āĻā§°ā§āĨ¤
2. Which mirror has an inward curved reflecting surface āĻā§āύāĻā§ āĻĻāĻžāĻĒā§āύ⧰ āĻĒā§ā§°āϤāĻŋāĻĢāϞāĻ āĻĒā§āώā§āĻ āĻāĻŋāϤ⧰āĻĢāĻžāϞ⧠āĻŦāĻžāĻāĻāĻž ?
A) Plane Mirror | B) Concave Mirror | C) Convex Mirror | D) Glass Slab
Ans: B) Concave Mirror
Explanation: The reflecting surface of a concave mirror bends inward. āĻŦā§āϝāĻžāĻā§āϝāĻž: āĻ ā§ąāϤāϞ āĻĻāĻžāĻĒā§āύ⧰ āĻĒā§ā§°āϤāĻŋāĻĢāϞāĻ āĻĒā§āώā§āĻ āĻāĻŋāϤ⧰āĻĢāĻžāϞ⧠āĻŦāĻžāĻāĻāĻž āĻĨāĻžāĻā§āĨ¤
3. Which mirror has an outward curved reflecting surface ? āĻā§āύāĻā§ āĻĻāĻžāĻĒā§āύ⧰ āĻĒā§ā§°āϤāĻŋāĻĢāϞāĻ āĻĒā§āώā§āĻ āĻŦāĻžāĻšāĻŋā§°āĻĢāĻžāϞ⧠āĻŦāĻžāĻāĻāĻž ?
A) Plane Mirror | B) Concave Mirror | C) Convex Mirror | D) Prism
Ans: C) Convex Mirror
Explanation: The reflecting surface of a convex mirror bends outward. āĻŦā§āϝāĻžāĻā§āϝāĻž: āĻāϤā§āϤāϞ āĻĻāĻžāĻĒā§āύ⧰ āĻĒā§ā§°āϤāĻŋāĻĢāϞāĻ āĻĒā§āώā§āĻ āĻŦāĻžāĻšāĻŋā§°āĻĢāĻžāϞ⧠āĻŦāĻžāĻāĻāĻž āĻĨāĻžāĻā§
4. Plane, concave and convex mirrors mainly differ in: āϏāĻŽāϤāϞ, āĻ ā§ąāϤāϞ āĻā§°ā§ āĻāϤā§āϤāϞ āĻĻāĻžāĻĒā§āύ⧰ āĻŽāĻžāĻāϤ āĻŽā§āϞ āĻĒāĻžā§°ā§āĻĨāĻā§āϝ āĻāĻŋāĻšāϤ āĻĨāĻžāĻā§ ?
A) Colour | B) Weight | C) Shape and image formation | D) Thickness
Ans: C) Shape and image formation
Explanation: These mirrors differ in the shape of their reflecting surfaces and the way they form images. āĻŦā§āϝāĻžāĻā§āϝāĻž: āĻāĻ āĻĻāĻžāĻĒā§āύāϏāĻŽā§āĻšā§° āĻŽā§āϞ āĻĒāĻžā§°ā§āĻĨāĻā§āϝ āĻšā§āĻā§ āĻāĻā§āϤāĻŋ āĻā§°ā§ āĻĒā§ā§°āϤāĻŋāĻā§āĻāĻŦāĻŋ āĻāĻ āύ⧰ āϧ⧰āĻŖāĨ¤
5. Which one of the following correctly matches the mirror with its reflecting surface ? āϤāϞ⧰ āĻā§āύāĻā§ āĻĻāĻžāĻĒā§āύ āĻā§°ā§ āϤāĻžā§° āĻĒā§ā§°āϤāĻŋāĻĢāϞāĻ āĻĒā§āώā§āĻ ā§° āϏāĻ āĻŋāĻ āĻŽāĻŋāϞ ?
A) Plane Mirror – Flat | B) Concave Mirror – Inward Curved | C) Convex Mirror – Outward Curved | D) All of the above
Ans: D) All of the above
Explanation: All three statements are correct. āĻŦā§āϝāĻžāĻā§āϝāĻž: āĻāϞā§āϞā§āĻ āĻā§°āĻž āϤāĻŋāύāĻŋāĻāĻāĻž āĻāĻā§āϤāĻŋ āϏāĻ āĻŋāĻāĨ¤ āϏā§āϝāĻŧā§āĻšā§ āϏāĻ āĻŋāĻ āĻāϤā§āϤ⧰ All of the aboveāĨ¤
6. Which of the following is NOT a spherical mirror ? āϤāϞ⧰ āĻā§āύāĻā§ āĻā§āϞāĻā§āϝāĻŧ āĻĻāĻžāĻĒā§āύ āύāĻšāϝāĻŧ ?
A) Concave Mirror | B) Convex Mirror | C) Plane Mirror | D) None of these
Ans: C) Plane Mirror
Explanation: Concave and convex mirrors are spherical mirrors, whereas a plane mirror has a flat surface and is not spherical. āĻŦā§āϝāĻžāĻā§āϝāĻž: āĻ ā§ąāϤāϞ āĻā§°ā§ āĻāϤā§āϤāϞ āĻĻāĻžāĻĒā§āύ āĻā§āϞāĻā§āϝāĻŧ āĻĻāĻžāĻĒā§āύ, āĻāĻŋāύā§āϤ⧠āϏāĻŽāϤāϞ āĻĻāĻžāĻĒā§āύ āĻā§āϞāĻā§āϝāĻŧ āύāĻšāϝāĻŧāĨ¤
Trick (āĻŽāύāϤ ā§°āĻžāĻāĻŋāĻŦ)