Ray Optics and Optical Instruments
A comprehensive revision worksheet covering reflection, refraction, lenses, prisms, and optical instruments based on Chapter 9. Total marks: 50.
Section A — Multiple Choice Questions
Choose the correct answer for each question.
On what principle do optical fibres work?
The power of a lens is +2.5 D. What type of lens is it and what is its focal length?
For an astronomical telescope, the objective lens should have:
A ray of light passes from a denser to a rarer medium. The critical angle for the pair of media is
Which of the following relations is known as the mirror equation?
Section B — True or False
State whether the following statements are true or false.
Section C — Fill in the Blanks
Complete the following sentences.
Section D — Short Answer Questions
Answer the following questions briefly.
Section E — Numerical Problems
Solve the following problems, showing your work where necessary.