Some rays falling on a converging lens arefocused 20 cm from the lens. When adiverging lens is placed in contact with theconverging lens, the rays are for 30 cm fromthe combination. What is the focal length ofthe diverging lens.(a)50cm(b)-50cm(c)-60cm(d60cm
Answers
Answer:
answer is answer is 50 only
Explanation:
because because I will explain see they have given 20 and 30 plus 20 and 30 mins they will get 50 then 50k pit separate then we will come to down then a b c and d is 50 cm BC is -57 she is - 60 CM 60 CM and 7 is CD is 60 CM it is wrong for love wrong simple ful is not wrong upto 50 cm it is correct
we we have kept 50 inside then we have will take ABCD one by one will not the numbers first is 50 cm then second is -50 CM then third is 60 -6 0centimetre then CD is 60cm then given to two pages like 50 50 and 60 60 first we will take 250 + 50 and - 50 how how how much answer came I will tell zero because plus and minus become - 50 - 50 is equal to zero then 60 - 60 + 60 how it will come I will 1000 plus and minus become - only and 60 - 68 = 0 thousand years will 2000 plus and minus will come we have plus and minus becomes minors only
Answer:
50 is answer
Explanation:
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