NEET Solved Paper 2014 Question 37
Question: If the focal length of objective lens is increased, then magnifying power of [AIPMT 2014]
Options:
A) microscope will increase but that of telescope Decrease
B) microscope and telescope both will increase
C) microscope and telescope both will decrease
D) microscope will decrease but that of telescope will increase
Show Answer
Answer:
Correct Answer: D
Solution:
For microscope $ m=\frac{L}{f _{o}}\frac{D}{f _{e}} $
$ \Rightarrow ,m\propto \frac{1}{f _{o}} $ For telescope $ m=\frac{f _{o}}{f _e^{’}},m\propto f _{o} $
The magnifying power of microscope will decrease but the magnifying power telescope will increase.
