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Engineering Physics by Gaur and Gupta. We covered all the Engineering Physics by Gaur and Gupta mcqs in this post for free so that you can practice well for the exam.
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Engineering Physics by Gaur and Gupta Objective for Students
If the angle of incidence in a denser medium is equal to the critical angle, the angle of refraction will be
(a) 0°
(b) 45°
(c) 90°
(d) 135°
Option c – 90°
The absolute refractive index of air is
(a) 1.03
(b) 1.00003
(c) 1.003
(d) 1.0003
Option d – 1.0003
Which one of the following statements about the refractive index of a material medium with respect to air is correct?
(a) It can be either positive or negative.
(b) It can have a zero value.
(c) It is unity for all materials.
(d) It is always greater than one.
Option d – It is always greater than one
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