Image formation and magnification Quiz
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5 questions, one answer each
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1. An object is 0.30 m from a converging lens of focal length 0.20 m. What is the image distance?
- A. 0.12 m
- B. 0.50 m
- C. 0.60 m
- D. 0.10 m
2. An image has magnification 3.0 and the object is 1.5 cm tall. How tall is the image?
- A. 4.5 cm
- B. 0.50 cm
- C. 1.5 cm
- D. 3.0 cm
3. A lens calculation gives v = −0.20 m. What does this show?
- A. The image is real and inverted
- B. The image is virtual and on the object side
- C. The object is virtual
- D. The lens is diverging
4. Which situation gives an upright, magnified image with a converging lens?
- A. Object at 2f
- B. Object between f and 2f
- C. Object beyond 2f
- D. Object inside f
5. A graph of 1/v against 1/u for a converging lens has an intercept of 8.0 m⁻¹ on the 1/v axis. What is f?
- A. 8.0 m
- B. 0.80 m
- C. 1.25 m
- D. 0.125 m