Neco Model Questions Vol1 2023 Physics Question 30

Practice objective / multiple choice question 30 from the 2023 Neco Model Questions Vol1 Physics examination.

Neco Model Questions Vol1 2023 Physics Objective / Multiple Choice Medium Difficulty
Question 30 NECO_MODEL_QUESTIONS_VOL1 • 2023 • PHYSICS • objective

A thin convex lens of focal length \(f = 12\ \text{cm}\) forms a sharp image of an object on a screen placed \(48\ \text{cm}\) from the lens.\n\n(i) Determine the object distance \(u\) and the magnification \(m\).\n(ii) The lens is then moved \(5\ \text{cm}\) towards the screen (the object remains fixed). Find the new image distance \(v'\) and the change in magnification \(\Delta m = m' - m\).

Answer Options

A. (i) u = 12 cm, m = -1; (ii) v' = 32 cm, m' = -1, Δm = 2
Correct Answer B. (i) u = 16 cm, m = -3; (ii) v' = 28 cm, m' = -4/3, Δm = 5/3
C. (i) u = 14 cm, m = -2; (ii) v' = 30 cm, m' = -5/3, Δm = 1/3
D. (i) u = 18 cm, m = -4; (ii) v' = 26 cm, m' = -3/2, Δm = 2/3
Correct Answer
B
Correct Option:
(i) u = 16 cm, m = -3; (ii) v' = 28 cm, m' = -4/3, Δm = 5/3

About This Question

This is Neco Model Questions Vol1 2023 Physics Question 30. It is one of the objective questions from the 2023 Neco Model Questions Vol1 Physics examination.

Difficulty level: Medium .

View More Neco Model Questions Vol1 2023 Physics Questions More Neco Model Questions Vol1 Practice Questions Back to Questions

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows
Chat with Support