1.You use a CONVEX lens of focal length f= 5 cm to concentrate the rays of...

Question

Question

1.You use a CONVEX lens of focal length f= 5 cm to concentrate the rays of the sun to set fire to (an unfortunate) leaf a) Dr

Answer 1

Answer #1

Object distance will be infinite and the rays will get converged through lens at a fixed point called focus . Image will be point sized.

Calculation and ray diagram is as shown below

1ien, 5cm Kk Sun Rays nin mage istamee Use Les os m ula 0% 0 : obte ct distance T Image distance Ccc 1 object ie sun is at in

Answer 2

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