1.

Two lamps of luminous intensity of 8 Cd and 32 Cd respectively are lying at a distance of 1.2 m from each other. Where should a screen be placed between two lamps such that its two faces are equally illuminated due to two sources

Answer»

10 cm from 8 CD lamp
10 cm from 32 Cd lamp
40 cm from 8 Cd lamp
40 cm from 32 Cd lamp

Answer :c


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