For a given lens, the magnification was found to be twice as large as when the object was 0.15 m distant from it as when the distance was 0.2 m. The focal length of the lens is
a)
1.5 m
b)
0.20 m
c)
0.10 m
d)
0.05 m
For a given lens, the magnification was found to be twice as large as when the object was 0.15 m distant from it as when the distance was 0.2 m. The focal length of the lens is
a)
1.5 m
b)
0.20 m
c)
0.10 m
d)
0.05 m
Question ID - 152565 | SaraNextGen Top Answer
For a given lens, the magnification was found to be twice as large as when the object was 0.15 m distant from it as when the distance was 0.2 m. The focal length of the lens is
a)
1.5 m
b)
0.20 m
c)
0.10 m
d)
0.05 m
|
For a given lens, the magnification was found to be twice as large as when the object was 0.15 m distant from it as when the distance was 0.2 m. The focal length of the lens is |
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|
a) |
1.5 m |
b) |
0.20 m |
c) |
0.10 m |
d) |
0.05 m |
1 Answer
127 votes
Answer Key / Explanation : (c) -
(c)
Let as shown, 1 and 2 are positions of objects and images in two different situations.
Object
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t is given
Here, 
Therefore,
127 votes
Answer Link
127