-->

Wave Optics

Question

Wired Faculty App

Two thin lenses of powers 12 D and-2D respectively are placed in contact, the power, focal length and nature
respectively will be

8D, 0.8m, convex

14D, 0.5m, convex

5D, 0.2m, convex

10D, 0.1m, convex

Solution

10D, 0.1m, convex

$Given : - P_{1} = 12 D, P_{2} = - 2 D Power of combination P = P_{1} + P_{2} = 12 - 2 = 10 D Focal length f = \frac{1}{P} = \frac{1}{10} m = 0.1 m The combined lens will be convex (convergent)$

Convex lens refers to the lens which merges the light at a particular point, that travels through it.

For Daily Free Study Material Join wiredfaculty

Wave Optics

Two thin lenses of powers 12 D and-2D respectively are placed in contact, the power, focal length and nature
respectively will be

8D, 0.8m, convex

14D, 0.5m, convex

5D, 0.2m, convex

10D, 0.1m, convex

Some More Questions From Wave Optics Chapter

Light travels faster in air than that in glass .This is accordance with

In forward biased if the p-n junctions diode is forward biased, then width of potential barrier in p-n junction diode

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

Phone Number

Email Address

Loaction

For Daily Free Study Material Join wiredfaculty

Wave Optics

Two thin lenses of powers 12 D and-2D respectively are placed in contact, the power, focal length and naturerespectively will be 8D, 0.8m, convex 14D, 0.5m, convex 5D, 0.2m, convex 10D, 0.1m, convex

Some More Questions From Wave Optics Chapter

Light travels faster in air than that in glass .This is accordance with

In forward biased if the p-n junctions diode is forward biased, then width of potential barrier in p-n junction diode

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

Two thin lenses of powers 12 D and-2D respectively are placed in contact, the power, focal length and nature
respectively will be

8D, 0.8m, convex

14D, 0.5m, convex

5D, 0.2m, convex

10D, 0.1m, convex