Physics, asked by bk013558, 1 year ago

please sove ques no.4

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Answered by ashutoshkapoorp9osgk

a) convex lens is used because it converges the sun rays at a point

b) principal focus

c) black paper is used because it absorbs most of the sunlight

ashutoshkapoorp9osgk: correct hai kya

bk013558: yes

bk013558: u r correct

bk013558: thanks for sending

ashutoshkapoorp9osgk: plzzz mark it brainliest

bk013558: something correct not every thing

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