7(c)(i)2017
Short answerEasy3 marks
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
Showing 7 of 82 matching questions (113 marks).
7 questions
7(c)
The diagram below shows a point source P inside a water container. Four rays A, B, C, D starting from the source P are shown upto the water surface.
7(c)(ii)2017
Short answerEasy1 mark
2(c)2016
DiagramModerate2 marks
2(d)
State the dependence of angle of deviation :
2(d)(i)2016
Short answerEasy1 mark