Multiple choice

Consider the following statements:1. The focal length of the objective of a microscope is less than the focal length of the eyepiece.

  1. The minimum distance between an object and its real image formed by a convex lens of focal length f is equal to 4f. Which of the statements given above is/are correct?

  1. 1 only

  2. 2 only

  3. Both 1 and 2

  4. Neither 1 nor 2
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In a compound microscope, the objective has a very short focal length (few mm) to magnify the specimen, while the eyepiece has a longer focal length to further magnify the real image. For a convex lens, the minimum distance between object and real image is 4f, occurring when the object is at 2f. Both statements are correct.

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