An object is placed at a distance of 30 cm from a thin convex lens along its axis.The lens has a focal length of 10 cm.What are the values,respectively,of the image distance and magnification?

Question

Quizplus · Accepted Answer

Using the lens formula:

1/f = 1/u + 1/v

where f is the focal length of the lens, u is the object distance, and v is the image distance.

Plugging in the given values, we get:

1/10 = 1/30 + 1/v

Solving for v, we get:

v = 15 cm

To find the magnification, we use the formula:

m = -v/u

Plugging in the values, we get:

m = -15/30 = -0.5

Therefore, the correct answer is D) 15 cm and -0.50.

An Object Is Placed at a Distance of 30 Cm