Question

An object is located 5.0 cm from a concave mirror. The focal length is 15.0 cm. What is the image distance?

a) -3.75 cm
b) -5.0 cm
c) 3.75 cm
d) 5.0 cm

Answer 1

The image distance for a concave mirror can be found using the mirror equation.

Step-by-step explanation:

To find the image distance for a concave mirror, we can use the mirror equation:

1/f = 1/di + 1/do

Where f is the focal length of the mirror, di is the image distance, and do is the object distance.

In this case, the object distance is given as 5.0 cm and the focal length is 15.0 cm. Plugging in these values into the equation:

1/15 = 1/di + 1/5

Solving for di, we get di = -3.75 cm. Therefore, the correct answer is (a) -3.75 cm.