Spherical Mirrors – MCQs
1. Which of the following is correct about concave and convex mirrors ? āĻ
ā§ąāĻ¤āĻ˛ āĻā§°ā§ āĻāĻ¤ā§āĻ¤āĻ˛ āĻĻāĻžāĻĒā§āĻ¨ā§° āĻŦāĻŋāĻˇāĻ¯āĻŧā§ āĻ¤āĻ˛ā§° āĻā§āĻ¨āĻā§ āĻāĻā§āĻ¤āĻŋ āĻ¸āĻ āĻŋāĻ ?
A) Both are plane mirrors | B) Both are spherical mirrors with the same shape | C) Both are spherical mirrors, but their shapes are opposite. | D) Both are lenses
Answer: C) Both are spherical mirrors, but their shapes are opposite.
Explanation: Concave and convex mirrors are both spherical mirrors. However, the concave mirror curves inward, while the convex mirror curves outward. āĻŦā§āĻ¯āĻžāĻā§āĻ¯āĻž: āĻ
ā§ąāĻ¤āĻ˛ āĻā§°ā§ āĻāĻ¤ā§āĻ¤āĻ˛ āĻĻāĻžāĻĒā§āĻ¨ āĻĻā§āĻ¯āĻŧā§āĻāĻžāĻ āĻā§āĻ˛āĻā§āĻ¯āĻŧ āĻĻāĻžāĻĒā§āĻ¨, āĻāĻŋāĻ¨ā§āĻ¤ā§ āĻ
ā§ąāĻ¤āĻ˛ āĻĻāĻžāĻĒā§āĻ¨ āĻāĻŋāĻ¤ā§°āĻĢāĻžāĻ˛ā§ āĻŦāĻžāĻāĻāĻž āĻā§°ā§ āĻāĻ¤ā§āĻ¤āĻ˛ āĻĻāĻžāĻĒā§āĻ¨ āĻŦāĻžāĻšāĻŋā§°āĻĢāĻžāĻ˛ā§ āĻŦāĻžāĻāĻāĻžāĨ¤
2. A concave mirror has its reflecting surface: āĻ
ā§ąāĻ¤āĻ˛ āĻĻāĻžāĻĒā§āĻ¨ā§° āĻĒā§ā§°āĻ¤āĻŋāĻĢāĻ˛āĻ āĻĒā§āĻˇā§āĻ āĻā§āĻ¨ā§āĻ§ā§°āĻŖā§° ?
A) Flat | B) Curved inward | C) Curved outward | D) Irregular
Ans: B) Curved inward
Explanation: The reflecting surface of a concave mirror bends inward. āĻŦā§āĻ¯āĻžāĻā§āĻ¯āĻž: āĻ
ā§ąāĻ¤āĻ˛ āĻĻāĻžāĻĒā§āĻ¨ā§° āĻĒā§ā§°āĻ¤āĻŋāĻĢāĻ˛āĻ āĻĒā§āĻˇā§āĻ āĻāĻŋāĻ¤ā§°āĻĢāĻžāĻ˛ā§ āĻŦāĻžāĻāĻāĻž āĻĨāĻžāĻā§āĨ¤
3. A convex mirror has its reflecting surface: āĻāĻ¤ā§āĻ¤āĻ˛ āĻĻāĻžāĻĒā§āĻ¨ā§° āĻĒā§ā§°āĻ¤āĻŋāĻĢāĻ˛āĻ āĻĒā§āĻˇā§āĻ āĻā§āĻ¨ā§āĻ§ā§°āĻŖā§° ?
A) Flat | B) Curved inward | C) Curved outward | D) Wavy
Ans: C) Curved outward
Explanation: The reflecting surface of a convex mirror bends outward. āĻŦā§āĻ¯āĻžāĻā§āĻ¯āĻž: āĻāĻ¤ā§āĻ¤āĻ˛ āĻĻāĻžāĻĒā§āĻ¨ā§° āĻĒā§ā§°āĻ¤āĻŋāĻĢāĻ˛āĻ āĻĒā§āĻˇā§āĻ āĻŦāĻžāĻšāĻŋā§°āĻĢāĻžāĻ˛ā§ āĻŦāĻžāĻāĻāĻž āĻĨāĻžāĻā§āĨ¤
4. Which type of mirror is also known as a converging mirror ? āĻā§āĻ¨āĻā§ āĻĻāĻžāĻĒā§āĻ¨āĻ āĻ
āĻāĻŋāĻ¸āĻžā§°ā§ (Converging) āĻĻāĻžāĻĒā§āĻ¨ āĻŦā§āĻ˛āĻž āĻšāĻ¯āĻŧ ?
A) Plane Mirror | B) Concave Mirror | C) Convex Mirror | D) Glass Slab
Ans: B) Concave Mirror
Explanation: A concave mirror converges parallel rays to the principal focus. āĻŦā§āĻ¯āĻžāĻā§āĻ¯āĻž: āĻ
ā§ąāĻ¤āĻ˛ āĻĻāĻžāĻĒā§āĻ¨ā§ āĻ¸āĻŽāĻžāĻ¨ā§āĻ¤ā§°āĻžāĻ˛ āĻāĻŋā§°āĻŖāĻ¸āĻŽā§āĻšāĻ āĻŽā§āĻā§āĻ¯ āĻĢ'āĻāĻžāĻāĻ¤ āĻāĻāĻ¤ā§ā§°āĻŋāĻ¤ āĻā§°ā§āĨ¤ āĻ¸ā§āĻ¯āĻŧā§āĻšā§ āĻāĻ¯āĻŧāĻžāĻ āĻ
āĻāĻŋāĻ¸āĻžā§°ā§ āĻĻāĻžāĻĒā§āĻ¨ āĻŦā§āĻ˛āĻž āĻšāĻ¯āĻŧāĨ¤
5. Which type of mirror is also known as a diverging mirror ? āĻā§āĻ¨āĻā§ āĻĻāĻžāĻĒā§āĻ¨āĻ āĻ
āĻĒāĻ¸āĻžā§°ā§ (Diverging) āĻĻāĻžāĻĒā§āĻ¨ āĻŦā§āĻ˛āĻž āĻšāĻ¯āĻŧ ?
A) Plane Mirror | B) Concave Mirror | C) Convex Mirror | D) Prism
Ans: C) Convex Mirror
Explanation: A convex mirror causes reflected rays to spread out (diverge). āĻŦā§āĻ¯āĻžāĻā§āĻ¯āĻž: āĻāĻ¤ā§āĻ¤āĻ˛ āĻĻāĻžāĻĒā§āĻ¨ā§ āĻĒā§ā§°āĻ¤āĻŋāĻĢāĻ˛āĻŋāĻ¤ āĻāĻŋā§°āĻŖāĻ¸āĻŽā§āĻšāĻ āĻ
āĻĒāĻ¸āĻžā§°āĻŋāĻ¤ āĻā§°ā§āĨ¤ āĻ¸ā§āĻ¯āĻŧā§āĻšā§ āĻāĻ¯āĻŧāĻžāĻ āĻ
āĻĒāĻ¸āĻžā§°ā§ āĻĻāĻžāĻĒā§āĻ¨ āĻŦā§āĻ˛āĻž āĻšāĻ¯āĻŧāĨ¤
6. Plane mirror, concave mirror and convex mirror are classified on the basis of: āĻ¸āĻŽāĻ¤āĻ˛, āĻ
ā§ąāĻ¤āĻ˛ āĻā§°ā§ āĻāĻ¤ā§āĻ¤āĻ˛ āĻĻāĻžāĻĒā§āĻ¨āĻ āĻāĻŋāĻšā§° āĻāĻŋāĻ¤ā§āĻ¤āĻŋāĻ¤ āĻļā§ā§°ā§āĻŖā§āĻŦāĻŋāĻāĻžāĻāĻ¨ āĻā§°āĻž āĻšāĻ¯āĻŧ ?
A) Colour | B) Thickness | C) Shape of the reflecting surface | D) Weight
Ans: C) Shape of the reflecting surface
Explanation: Mirrors are classified according to the shape of their reflecting surface. āĻŦā§āĻ¯āĻžāĻā§āĻ¯āĻž: āĻĻāĻžāĻĒā§āĻ¨āĻ¸āĻŽā§āĻšāĻ āĻĒā§ā§°āĻ¤āĻŋāĻĢāĻ˛āĻ āĻĒā§āĻˇā§āĻ ā§° āĻāĻā§āĻ¤āĻŋā§° āĻāĻŋāĻ¤ā§āĻ¤āĻŋāĻ¤ āĻļā§ā§°ā§āĻŖā§āĻŦāĻŋāĻāĻžāĻāĻ¨ āĻā§°āĻž āĻšāĻ¯āĻŧāĨ¤
Trick
- Concave = Curved Inward = Converging Mirror
- Convex = Curved Outward = Diverging Mirror
- Both = Spherical Mirrors (āĻā§āĻ˛āĻā§āĻ¯āĻŧ āĻĻāĻžāĻĒā§āĻ¨)
