Physics-Optical Instruments
NEET Physics Optical Instruments MCQ Question
Type: MCQ-conceptual-Easy-Class 12
Which of the following statements about optical instruments is correct?
A
Total internal reflection occurs when light travels from a denser to a rarer medium at an angle greater than the critical angle.
B
The refractive index of a medium is always greater than one for all materials.
C
The angle of deviation in a prism is independent of the angle of incidence.
D
The path of a ray in a prism can be traced back to show that the angle of incidence equals the angle of refraction.
Correct Answer
Option A
Detailed Explanation
Total internal reflection happens when light travels from a denser medium to a rarer medium at an angle greater than the critical angle, leading to no refraction above the water surface, as described in the NCERT context.
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