The magnifying power of a compound microscope increases when

  • A
    The focal length of objective lens is increased and that of eye lens is decreased
  • B
    The focal length of eye lens is increased and that of objective lens is decreased
  • C
    Focal lengths of both objective and eye-piece are increased
  • D
    Focal lengths of both objective and eye-piece are decreased

Explore More

Similar Questions

$A$ compound microscope has two lenses. The magnifying power of one is $5$ and the combined magnifying power is $100$. The magnifying power of the other lens is

The focal lengths of the objective and eyepiece of a compound microscope are $1 \, cm$ and $5 \, cm$ respectively. If the magnification is $45$,what is the length of the tube in $cm$?

$A$ compound microscope with an objective lens of focal length $1 \, cm$ and an eyepiece of $2 \, cm$ focal length has a tube length of $20 \, cm$. Calculate the magnifying power of the microscope,if the final image is formed at the least distance of distinct vision.

In a Ramsden eyepiece,two plano-convex lenses,each of focal length $f$,are separated by a distance of $d = 2f/3$. If the separation distance is $12 \ cm$,what is the equivalent focal length (in $cm$) of the eyepiece?

In order to increase the magnifying power of a compound microscope:

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo