Refraction — Question Bank (Cambridge) — Cambridge IGCSE Physics 0625 Revision Notes & Topical Questions

Cambridge Lower Secondary Stage 8

Question 1
Paper Ref: 5129/12_Summer_2024_Q35

A ray of light in air enters a glass block.
normal
—
Which row identifies the angle of incidence and the angle of refraction?
angle of angle of
incidence refraction
P Q
P R
S Q
S R

Options:
A
B
C
D
Correct Key: B

Question 2
Paper Ref: 5129/11_Summer_2025_Q37

A ray of light is incident on a rectangular glass block. The angle of incidence is 55°.
incident ray normal
i
glass surface
i)
i
glass block
Some of the light enters the glass.
What is the angle between the ray of light in the glass and the surface of the glass?
A below 20°
B between 25° and 35°
C between 35° and 89°
D 90°

Options:
A
B
C
D
Correct Key: C

Question 3
Paper Ref: 5129/12_Summer_2025_Q34

The diagram shows a ray of light in air entering a glass block.
Xi
air
glass
block
Which row gives the names for angle X and angle Y?
angle of incidence angle of reflection
angle of incidence angle of refraction
angle of refraction angle of reflection
angle of refraction angle of refraction

Options:
A
B
C
D
Correct Key: B

Question 4
Paper Ref: 5129/12_Winter_2025_Q36

A ray of light enters a semicircular glass block at P as shown.
What is the path taken by the ray?
A PQR B PST C PUV D PWX

Options:
A
B
C
D
Correct Key: B

•1•.• • • •[•P•R•I• •2•0•0•8••• •P•1• • •·• • •Q•1•4• • •P•a•r•t• •(•c•)• • •·• • •2•0•0•8• • •·• • •P•r•i•m•a•r•y• •0•8•4•6•]• • • • • • •(•n•o• •p•u•b•l•i•s•h•e•d• •m•a•r•k• •s•c•h•e•m•e• •f•o•r• •t•h•i•s• •p•a•p•e•r•)•

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