Home
Class 12
PHYSICS
Two lenses of power +1.5D and -0.5D are ...

Two lenses of power `+1.5D` and `-0.5D` are kept in contact on their principal axis . What is the effective power of the combination ?

Text Solution

Verified by Experts

`P=P_1+P_2` =1.5-0.5 = 1 D
Promotional Banner

Topper's Solved these Questions

  • II PUC MARCH-2018

    OSWAAL PUBLICATION|Exercise PART-B|8 Videos

  • II PUC MARCH-2018

    OSWAAL PUBLICATION|Exercise PART-C|8 Videos

  • II PUC MARCH-2017 (SOLVED PAPER )

    OSWAAL PUBLICATION|Exercise PART-D|11 Videos

  • KARNATAKA II PUC APRIL 2020 CLASS -XII

    OSWAAL PUBLICATION|Exercise PART-D (Answer any three of the following questions:)|5 Videos

Similar Questions

Explore conceptually related problems

Two lenses of powers + 1.5 D and - 1 D are kept in contact. The focal length of the combination is

Two lenses of power +2D and -5D are kept in contact. The focal length of the combination is

Two lenses of power +3.5 D and - 2.5 D are placed in contact. The lens in the combination set up acts like a

Two coaxial lenses of power + 4D and - 2D are placed in contact. The focal length of combination is

Two lenses of local lengths 0.20m and 0.30m are kept in contact. Find the focal length of the combination. Calculate power of two and combination.

Two lenses of focal lengths 0.20 m and 0.30 m are kept in contact with each other. Calculate the resultant focal length of the combination. Also calculate the powers of the individual lenses and that of the equivalent lens.

A lens of power +2D and lend of power -1D are kept in contact. The combination behaves as a lens of power