When an object is moved 10cm towards a
concave mirror,the real image moves from 20cm to 50cm,find the radius of curvature
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2
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6
Answer:
U = - 10 cm
v = - 50 cm
f = ?
1/f = 1/v + 1/u
= 1/- 50 + 1/- 10
= - 6/50
= - 3/25
f = - 25/3
Radius of curvature =
- 25/3 × 2
- 16.7 cm
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