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A rod of length 5 cm lies along the principal axis of the concave mirror of focal length 15 cm in such a way that the end of the rod which is closer to the pole is 30 cm away from it. Then the length of the image |
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(a) |
2.75 cm |
(b) |
3.75 cm |
(c) |
4.75 cm |
(d) |
None of these |
|
A rod of length 5 cm lies along the principal axis of the concave mirror of focal length 15 cm in such a way that the end of the rod which is closer to the pole is 30 cm away from it. Then the length of the image |
|||||||
|
(a) |
2.75 cm |
(b) |
3.75 cm |
(c) |
4.75 cm |
(d) |
None of these |