JEE (Advanced) 2018 Paper-1

Instructions

For each question, enter the correct numerical value (in decimal notation, truncated/rounded-off to the second decimal place; e.g. 6.25, 7.00, -0.33, -.30, 30.27, -127.30) using the mouse and the on-screen virtual numeric keypad in the place designated to enter the answer.

Question 13

Sunlight of intensity 1.3 $$kW ๐‘š^{โˆ’2}$$ is incident normally on a thin convex lens of focal length 20 ๐‘๐‘š. Ignore the energy loss of light due to the lens and assume that the lens aperture size is much smaller than its focal length. The average intensity of light, in $$kW ๐‘š^{โˆ’2}$$, at a distance 22 ๐‘๐‘š from the lens on the other side is __________


Correct Answer: e


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