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ICSE Question Bank

Refraction of Light at Plane Surfaces

Appeared in 10 of the 11 available papers.

Examined in
10 of 11 papers

Appears almost every year — treat as core

Typically worth
11.3 marks

Average per paper it appears in · 113 marks in total

Usual form
Short answer

40% of this chapter's 82 questions

Needs a diagram
54%

44 questions carry a figure — practise drawing them

Question-type distribution

  • Short answer33
  • Diagram14
  • MCQ13
  • Numerical8
  • Reasoning4
  • Identification4
  • True/False3
  • Fill in the blank2

Most frequent topics

Refraction / total internal reflection 38Total internal reflection in a prism 3Critical angle and colour 2Real and apparent depth 2Relative refractive index 2Speed of light in a medium 2Minimum deviation in a prism 2Refraction through a prism 2
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Showing 25 of 82 matching questions (113 marks).

25 questions

4(iii)(b)

The diagram below shows the path of a blue ray through the prism :

Figure for this question
5(ii)

Light travels a distance of ‘10x’ units in time ‘t1’ in vacuum and it travels a distance of ‘x’ units in time ‘t2’ in a denser medium. Using this information answer the question that follows :

5(iii)

A monochromatic ray of light is incident on an equilateral prism placed at minimum deviation position with an angle of incidence 45° as shown in the diagram.

Figure for this question
1

Choose the correct answers to the questions from the given options. (Do not copy the questions, write the correct answers only.)

4(i)

The diagram below shows the ray OP travelling through an equilateral prism of a certain material.

Figure for this question
4

Copy the diagram given below and complete the path of the light ray PQ, as it emerges out of the prism by marking necessary angles. The critical angle of glass is 42°.

Figure for this question
4(iii)

The diagram below shows two parallel rays A (Orange) & B (Blue) incident from air, on air-glass boundary.

Figure for this question

Select the correct option for each of the following questions

24

Select the correct option for each of the following questions

Figure for this question
24

The diagram below shows a ray of light travelling from air into a glass material as shown below. Answer the questions that follow:

25

Select the correct option for each of the following questions

Figure for this question
25

The diagram below shows the path of light passing through a right-angled prism of critical angle 42°