Q131 / 180 · NEET 2014 · Physics

It the focal length of objective lens is increased then magnifying power of:

  • A
    microscope will increase but that of telescope decrease
  • B
    microscope and telescope both will increase
  • C
    microscope and telescope both will decrease
  • Correct answer
    D
    microscope will decrease but that of telescope will increase

Solution

M.P. of a microscope =Lf0Dfe
If f0↑⇒ M.P. of the microscope will decrease
M.P. of telescope =f0fe
If f0↑⇒M/O. of telescope will increase.

Hence, the correct answer is option: 'D'.

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