The focal length of objective and eye-piece of a microscope are 1 cm and 5 cm respectively. If the magnifying power for relaxed eye is 45, then length of the tube is
a)
9 cm
b)
15 cm
c)
12 cm
d)
6 cm
The focal length of objective and eye-piece of a microscope are 1 cm and 5 cm respectively. If the magnifying power for relaxed eye is 45, then length of the tube is
a)
9 cm
b)
15 cm
c)
12 cm
d)
6 cm
Question ID - 152412 | SaraNextGen Top Answer
The focal length of objective and eye-piece of a microscope are 1 cm and 5 cm respectively. If the magnifying power for relaxed eye is 45, then length of the tube is
a)
9 cm
b)
15 cm
c)
12 cm
d)
6 cm
|
The focal length of objective and eye-piece of a microscope are 1 cm and 5 cm respectively. If the magnifying power for relaxed eye is 45, then length of the tube is |
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|
a) |
9 cm |
b) |
15 cm |
c) |
12 cm |
d) |
6 cm |
1 Answer
127 votes
Answer Key / Explanation : (b) -
|
(b) For the relaxed eye, magnifying power is
For objective lens, image is real
Given, Form
Length of the tube |
cm
10 cm
cm127 votes
Answer Link
127