MHT CET · Physics · Ray Optics
The magnifying power of a refracting type of astronomical telescope is ' \(\mathrm{m}\) '. If focal length of eyepiece is doubled then the magnifying power will become
- A \(\mathrm{m}\)
- B \(2 \mathrm{~m}\)
- C \(\frac{\mathrm{m}}{2}\)
- D \(\frac{\mathrm{m}}{4}\)
Answer & Solution
Correct Answer
(C) \(\frac{\mathrm{m}}{2}\)
Step-by-step Solution
Detailed explanation
Magnifying power, \(m=\frac{f_o}{f_e}\)
If \(\mathrm{f}_{\mathrm{e}}\) is doubled, the magnifying power will become \(\frac{\mathrm{m}}{2}\)
If \(\mathrm{f}_{\mathrm{e}}\) is doubled, the magnifying power will become \(\frac{\mathrm{m}}{2}\)
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