The focal length is a concave mirror 20cm at what distance from the mirror will the image of an object placed an 30cm distance
Answers
Answered by
1
18cm is right answer but I am not sure
Answered by
5
1/f = 1/v +1/u
here f=-20 cm
u= -30cm
v=?
1/-20=1/v +-1/30
1/-20+1/30 = 1/v
-3+2/60 =1/v
-1/60 = 1/v
therefore,
v =-60cm
hope it may helps u
here f=-20 cm
u= -30cm
v=?
1/-20=1/v +-1/30
1/-20+1/30 = 1/v
-3+2/60 =1/v
-1/60 = 1/v
therefore,
v =-60cm
hope it may helps u
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