When a biconvex lens of glass having refractive index 1.47 is dipped in a liquid

⇦

⇨

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:

1. The unit of permitivity of free space, ε₀ is
2. Following figures show the arrangement of bar magnets in different configurations
3. A beam of light of λ=600 nm from a distant source falls on a single slit 1 mm wide
4. The maximum particle velocity in a wave motion is half the wave velocity.
5. In a discharge tube ionization of enclosed gas is produced due to collisions between

Topics: Ray Optics (94)
Subject: Physics (2479)

---

Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score

18000+ students are using NEETLab to improve their score. What about you?

Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.

---

Share this page with your friends