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When a biconvex lens of glass having refractive index 1.47 is dipped in a liquid, it acts a plane sheet of glass. This implies that the liquid must have refractive index
Options
(a) equal to that of glass
(b) less then one
(c) greater than that of glass
(d) less than that of glass
Correct Answer:
equal to that of glass
Explanation:
1/f = (µₕ / µₘ – 1) (1/R₁ – 1/R₂)
If µₕ = µₘ, then
1/f = (1 – 1) (1/R₁ – 1/R₂)
1/f = 0, f = 1 / 0 = ∞
This implies that the liquid must have refractive index equal to glass.
Related Questions: - A bar magnet of pole strength 10 A-m is cut into two equal parts breadthwise.
- A bar magnet is hung by a thin cotton thread in a uniform horizontal magnetic field
- If the earth shrink such that its mass does not change but radius decreases to one
- The wavelength of the first line of Lymasn series for hydrogen atom is equal
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Topics: Ray Optics
(94)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A bar magnet of pole strength 10 A-m is cut into two equal parts breadthwise.
- A bar magnet is hung by a thin cotton thread in a uniform horizontal magnetic field
- If the earth shrink such that its mass does not change but radius decreases to one
- The wavelength of the first line of Lymasn series for hydrogen atom is equal
- A ship of mass 3 x 10⁷ kg initially at rest is pulled by a force of 5 x 10⁴ N through
Topics: Ray Optics (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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