Light waves and reflection Practice Questions
Question 1
Q1. Knowledge Recall (1 mark)
Define reflection of a light wave.
Question 2
Q2. Application (2 marks)
Explain how a convex mirror produces an image.
Question 3
Q3. Calculations (3 marks)
A ray of light strikes a plane mirror at an angle of 30°. Calculate the angle of reflection.
Question 4
Q4. Knowledge Recall (1 mark)
Name the part of the electromagnetic spectrum that contains visible light.
Question 5
Q5. Application (2 marks)
Describe how light is refracted when it passes from air into water.
Question 6
Q6. Calculations (4 marks)
A glass block has a refractive index of 1.5. A ray of light travels from air into the block at an angle of 40°. Calculate the angle of refraction.
Question 7
Q7. Knowledge Recall (2 marks)
State two uses of reflection.
Question 8
Q8. Application (3 marks)
Explain why the sky appears blue.
Question 9
Q9. Calculations (4 marks)
A wave has a frequency of 500 Hz and a wavelength of 60 cm. Calculate the speed of the wave.
Question 10
Q10. Knowledge Recall (2 marks)
Name the law that describes the relationship between the angle of incidence and the angle of reflection.