$A$ person is observing a bacteria through a compound microscope. For better observation and to improve its resolving power,he should:

  • A
    increase the wavelength of light.
  • B
    increase the refractive index of the medium between the object and objective lens.
  • C
    decrease the focal length of the eyepiece.
  • D
    decrease the diameter of the objective lens.

Explore More

Similar Questions

The ratio of diameters of two wires of the same material is $n : 1$. The length of the wires is $4\, m$ each. On applying the same load,the increase in length of the thin wire will be

When the margins of sepals or petals overlap one another without any particular direction,the condition is termed as

$A$ thin wire of length $L$ and uniform linear mass density $\rho$ is bent into a circular loop (as shown in the figure) with center $O$. The moment of inertia of the loop about the axis $XX'$ is:

Which of the following is the correct order of acidic strength?

The colour of $KMnO_4$ is due to

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