Igcse Model Questions Vol1 2017 Physics Question 38

Practice objective / multiple choice question 38 from the 2017 Igcse Model Questions Vol1 Physics examination.

Igcse Model Questions Vol1 2017 Physics Objective / Multiple Choice Medium Difficulty
Question 38 IGCSE_MODEL_QUESTIONS_VOL1 • 2017 • PHYSICS • objective

A convex lens of focal length 0.10 m forms a real image of a candle of height 5.0 cm placed 0.40 m from the lens onto a screen. A glass slab of thickness 3.0 mm and refractive index 1.6 is placed directly behind the screen, covering the image region. (i) By how much must the screen be moved away from the lens to bring the image back into sharp focus? (ii) State the linear magnification of the image and the image height.

Answer Options

A. Screen moved 1.2 mm away; magnification = -0.40 (inverted); image height ≈ 2.00 cm
B. Screen moved 3.0 mm away; magnification = -0.20 (inverted); image height ≈ 1.00 cm
C. Screen moved 2.5 mm away; magnification = -0.25 (inverted); image height ≈ 1.25 cm
Correct Answer D. Screen moved 1.8 mm away; magnification = -0.33 (inverted); image height ≈ 1.67 cm
Correct Answer
D
Correct Option:
Screen moved 1.8 mm away; magnification = -0.33 (inverted); image height ≈ 1.67 cm

About This Question

This is Igcse Model Questions Vol1 2017 Physics Question 38. It is one of the objective questions from the 2017 Igcse Model Questions Vol1 Physics examination.

Difficulty level: Medium .

View More Igcse Model Questions Vol1 2017 Physics Questions More Igcse 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