Question

In case of a compound microscope, which of the following statements is/are correct?

I. The focal length of the eyepiece is larger than the focal length of the objective.

II. The focal length of the eyepiece is smaller than the focal length of the objective.

III. The image produced in a normal optical microscope is real.

IV. The image produced in a normal optical microscope is virtual.

Select the correct answer using the codes given below.

(a) Only I

(b) I and IV

(c) II and III

(d) II and IV

Answer 1

(b) I and IV

The focal length of the eyepiece is larger than the focal length of the objective and image produced in normal optical microscope is virtual. Focal length of object is kept smaller to form a greatly enlarged image. This image is then viewed through eyepiece.