Physics, asked by bk013558, 11 months ago

please sove ques no.4

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Answered by ashutoshkapoorp9osgk
2
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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