0
You visited us 0 times! Enjoying our articles? Unlock Full Access!
Question

The radius of curvature of the convex surface of a planoconvex lens is 10 cm. What is the focal length of the plano-convex lens? (Here μ =1.5)
  1. 10cm
  2. 20cm
  3. 15cm
  4. 5cm

A
20cm
B
10cm
C
15cm
D
5cm
Solution
Verified by Toppr

R=10 cm;f=?

As, 1f=(μ1)(1R)

1f=(1.51)(110)

f=10.05=20cm

hence,option B is correct.

Was this answer helpful?
0
Similar Questions
Q1
The radius of curvature of the convex surface of a plano-convex lens is 10cm. What is the focal length of the plano-convex lens? (Here μ = 1.5)
View Solution
Q2
The radius of curvature of the convex surface of a planoconvex lens is 10 cm. What is the focal length of the planoconvex lens? ( Here μ =1.5 )
View Solution
Q3
The radius of curvature of the convex surface of a planoconvexlens is 10 cm. What is the focal length of the plano-convex lens? (Here μ = 1.5)
View Solution
Q4
The radius of curvature of curved surface of a plano-convex lens is 15 cm. The refractive index of the lens material is 1.5. The focal length of plano-convex lens is (surroundings is air)
View Solution
Q5
In a plano convex lens the radius of curvature of the convex lens is 10cm. If the plane side is polished, then the focal length will be
(Refractive index =1.5)
View Solution