Class 12 Physics: Ray Optics Basics Worksheet
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Q1 · MCQ · 1 mark
Which phenomenon is responsible for the twinkling of stars?
Q2 · MCQ · 1 mark
If a ray of light passes from a denser medium to a rarer medium, it bends:
Q3 · MCQ · 1 mark
The focal length of a plane mirror is:
Q4 · MCQ · 1 mark
For total internal reflection to occur, the light must travel from:
Q5 · MCQ · 1 mark
Which of the following is true for a virtual image?
Q6 · FILL · 1 mark
The SI unit of power of a lens is ____.
Q7 · FILL · 1 mark
A convex lens is also known as a ____ lens.
Q8 · FILL · 1 mark
The phenomenon of splitting of white light into its constituent colours is called ____.
Q9 · SHORT · 2 marks
State Snell's Law of refraction.
Q10 · SHORT · 2 marks
What is the critical angle in the context of total internal reflection?