Home
Class 12
PHYSICS
Two thin lenses have a combined power of...

Two thin lenses have a combined power of `+9 D`. When they are separated by a distance of 20 cm, their equivalent power becomes `27/5 D`. Their individual powers (in diopters) are..............

A

4, 5

B

3, 6

C

2, 7

D

1, 8.

Text Solution

Verified by Experts

Promotional Banner

Similar Questions

Explore conceptually related problems

Two thin lenses have a combined power of +9 D.When they are sparated by a distance of 20 cm. Their equivalent power becomes +(27)/(5)D .Their individual powers (in diopters)are

Two lenses having focal lengths +0.20 m and -0.30 m are separated by a distance of 0.15 m. Find the resultant power of the combination.

Two thin convex combin lenses each of focal lenght 0.5 m are kept coaxially separated by a distance 0.5 m. Focal length combination is

Convex lens of power 4D and a concave lens of power 3D are placed in contact. The equivalent power of the combination is

How can the power of the combination expressed, if two lenses are equibiconcave and separated by a distance?

Find the equivalent fraction 3/5 having (d) numerator 27