The time taken by sunlight to pass through a glass slab of thickness \(5~\text{mm}\) and refractive index \(1.5\) is:
1. \(\left(\dfrac{5}{3}\right) \times 10^{-8}~\text{s}\) 2. \(\left(\dfrac{5}{2}\right) \times 10^{-11}~\text{s}\)
3. \(\left(\dfrac{5}{3}\right) \times 10^{-11}~\text{s}\) 4. \(\left(\dfrac{5}{2}\right)\times 10^{-8}~\text{s}\)
Subtopic:  Refraction at Plane Surface |
 74%
From NCERT
NEET - 2024
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NEET 2026 - Target Batch - Vital
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A light ray falls on a glass surface of refractive index \(\sqrt{3}\), at an angle of \(60^\circ.\) The angle between the refracted and reflected rays would be:
1. \(120^\circ\) 2. \(30^\circ\)
3. \(60^\circ\) 4. \(90^\circ\)
Subtopic:  Refraction at Plane Surface |
 62%
From NCERT
NEET - 2022
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NEET 2026 - Target Batch - Vital
Hints
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NEET 2026 - Target Batch - Vital

A beam of light is incident vertically on a glass slab of thickness \(1~\text{cm},\) and refractive index \(1.5.\) A fraction \(A\) is reflected from the front surface while another fraction \(B\) enters the slab and emerges after reflection from the back surface. The time delay between them is:

1. \(10^{-10}~\text{s}\) 2. \(5\times 10^{-10}~\text{s}\)
3. \(10^{-11}~\text{s}\) 4. \(5\times 10^{-11}~\text{s}\)
Subtopic:  Refraction at Plane Surface |
 58%
From NCERT
NEET - 2022
To view explanation, please take trial in the course.
NEET 2026 - Target Batch - Vital
Hints
To view explanation, please take trial in the course.
NEET 2026 - Target Batch - Vital

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