Problem 23.79 An object is placed 33 cm from a certain mirror. The image is half

ID: 1443293 • Letter: P

Question

Problem 23.79

An object is placed 33 cm from a certain mirror. The image is half the size of the object, inverted, and real.

Part A

How far is the image from the mirror? Follow the sign conventions.

Express your answer using two significant figures.

Part B

What is the radius of curvature of the mirror? Follow the sign conventions.

Express your answer using two significant figures.

Problem 23.79

An object is placed 33 cm from a certain mirror. The image is half the size of the object, inverted, and real.

Part A

How far is the image from the mirror? Follow the sign conventions.

Express your answer using two significant figures.

Part B

What is the radius of curvature of the mirror? Follow the sign conventions.

Express your answer using two significant figures.

PART (A) m = - v/u

.5 = -v/33

v = - 16.5 cm (Image distance)

PART (B)

1/f = 1/v + 1/u

1/f = 1/-16.5 + 1/-33

1/f = (-1 / 16.5) - (1 / 33)

f = - 11 cm

Radius of curvature = 2f = 2 x 11 = 22 cm

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.