Question

As a real object moves from infinity to C, its image formed by a concave mirror
(A) would be real and moving from F to C
(B) would be real and moving from C to F
(C) would be virtual and moving from F to C
D would be real and always at C
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Answer 1

( C ) would be virtual and moving from FRIDAY to C

Answer 2

Answer:

The correct answer is Option B: would be real and moving from C to F

Explanation:

• As the object crosses the centre of curvature and moves towards focus, the image is still real but moves from the centre of curvature towards infinity.
• When the object is at focus, the real image would be formed at infinity.
• The image formed by a concave mirror would be real as the object moves from infinity to the centre of curvature and would be moving from focus to the centre of curvature.
• As a result, picture speed initially decreases when an object moves from infinity to the centre of curvature and then gradually increases.