Question

The line AB in the ray diagram represents a lens. State whether the lens is convex or concave.

Answer 1

Answer:

The lens must be Concave Lens

Explanation:

As per lens formula we know that

$\frac{1}{d_o} + \frac{1}{d_i} = \frac{1}{f}$

now we know that

$d_o = -x$

$d_i = y$

so we have

$\frac{1}{y} - \frac{1}{x} = \frac{1}{f}$

$f = \frac{xy}{x - y}$

where we know that

y > x

so focal length is coming with negative sign

so here it must be concave lens

#Learn

Topic : image formation by Lens

https://brainly.in/question/8659589

Answer 2

Answer:

it is concave

Explanation: