Question Paper
Class / Subject: Class 8 (CBSE) · Science
Chapter: Chapter 10 — Chapter 10: Light: Mirrors and Lenses
Time Allowed: 15 minutes
Max Marks: 6
1. A convex mirror always forms a: [1]
(A) virtual, diminished image
(B) real, magnified image
(C) real, inverted image
(D) no image at all
2. A concave mirror used in a torch helps to: [1]
(A) focus light into a beam
(B) spread light widely only
(C) block light
(D) absorb light
3. Vehicle rear-view mirrors are typically: [1]
(A) convex mirrors
(B) concave mirrors
(C) plane mirrors only
(D) no mirrors at all
4. A magnifying glass uses a: [1]
(A) convex lens
(B) concave lens
(C) plane mirror
(D) concave mirror
5. Short-sightedness (myopia) is corrected using a: [1]
(A) concave lens
(B) convex lens
(C) plane mirror
(D) concave mirror
6. The power of a lens is measured in: [1]
(A) dioptres
(B) metres
(C) degrees
(D) watts