Page 11 - 1202 Question Bank Physics Form 4

PAPER 2

Section A
Answer all questions.
1. Diagram 1 shows a surgeon performing microsurgery. She needs a sharp, magnified view of the surgical
site. She’s wearing glasses with magnifying lenses.

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Diagram 1
(a) Name the type of lenses she’s wearing. [1 mark]

(b) What is the optical phenomena occurred in the lenses? [1 mark]

(c) Draw a ray diagram to show the formation of the image for the surgical site. [2 marks]

(d) The surgeon does not wish to strain her eyes while performing the microsurgery. Where should be the
exact position of the surgical site from her (i) magnifying lenses (ii) eyes? HOTS Analysing [2 marks]

2. Diagram 2.1 shows how a ray of light passes through a glass block.

Air

Glass

Diagram 2.1
(a) (i) Draw and label the normal, the refracted ray, the angle of incidence and the angle of refraction in
Diagram 2.1. [2 marks]
98 Question 1:
SOS TIP (d) A virtual image with a large angular size that is infinitely far away and the distance from magnifier to eye is not that crucial. SOS TIP

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