Question

please expalin why ​

Answer 1

Answer:

d) lens and screen both towards the sun

Explanation:

firstly, let the distance between the candle and the lens is u and the image was formed at the screen at v

now, if light is projected from the sun, let, distance between the light source is U2 and from lens is V2

but v=V2 must be equal as the power of lens can't be changed and it'll focus parallel light rays at a definite distance.

so both the lens and screen has to be moved either far or toward the light source keeping the distance between them equal