Question Detail

PHY 104 MICROSCOPE Objective Question
Take CBT

Question

In the formula for the angular magnification of a simple single lens magnifier (M = 25/f), what does the '25' numerically represent?
Options
A The focal length of the lens in cm.
B The typical object distance in cm.
C The near point of a typical human eye in cm.
Correct Answer
D The maximum image distance in cm.
Correct Answer

Option C is the correct answer.

Detailed Explanation

While the formula itself states '25/f, where f is the focal length in cm,' the example on page 3 clarifies this constant. It mentions placing an object so 'the image is formed at the observer's near point, 25 cm in front of her eye.' This confirms that '25' refers to the standard near point distance in centimeters.

Hint

Consider the context of the example problem for the simple magnifier and what '25 cm' refers to there.

Question Info

Course: PHY 104
Topic: MICROSCOPE
Type: Objective
Difficulty: Not specified
Question 538 of 947
Previous Course Details Next