a) State the laws of refraction of light. (3 marks)
b) A ray of light travels from air into a glass block of refractive index 1.52. If the angle of incidence is 40°, calculate:
i) the angle of refraction (3 marks)
ii) the critical angle for the glass-air interface (3 marks)
c) A converging lens of focal length 15 cm forms a real image of an object placed 25 cm from the lens.
i) Calculate the image distance. (3 marks)
ii) Determine the magnification produced. (2 marks)
iii) State ONE practical application of a converging lens used in this manner. (1 mark)

Question

a) State the laws of refraction of light. (3 marks)
b) A ray of light travels from air into a glass block of refractive index 1.52. If the angle of incidence is 40°, calculate:
   i) the angle of refraction (3 marks)
   ii) the critical angle for the glass-air interface (3 marks)
c) A converging lens of focal length 15 cm forms a real image of an object placed 25 cm from the lens.
   i) Calculate the image distance. (3 marks)
   ii) Determine the magnification produced. (2 marks)
   iii) State ONE practical application of a converging lens used in this manner. (1 mark)

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Answer

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Answer

B) null

Answer

C) null

Answer

D) null

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