Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NEET 2017
Exam
NEET
Year
2017
Subject
Physics
Chapter
Ray Optics

NEET 2017 · Physics · Ray Optics

A thin prism having refracting angle 10 ^ o is made of glass of...

A thin prism having refracting angle 10o{10}^{o} is made of glass of refractive index 1.42. This prism is combined with another thin prism made of glass of refractive index 1.7. This combination produces dispersion without deviation. The refracting angle of second prism should be

Options

  1. A4o{4}^{o}
  2. B6o{6}^{o}
  3. C8o{8}^{o}
  4. D10o{10}^{o}

Correct answer

B. 6o{6}^{o}

Step-by-step solution

For dispersion without deviation

(μ−1)A+(μ′−1)A′=0\left(\mu - 1\right)A + \left({\mu}^{′} - 1\right){A}^{′} = 0

\left|\left(\mu - 1\right)A\right| = \left|\left({\mu}^{′} - 1\right){A}^{′}\right|<br/><br/>(1.42−1)×10o=(1.7−1)A′<br /><br />\left(1.42 - 1\right) \times {10}^{o} = \left(1.7 - 1\right){A}^{′}

4.2=0.7A′4.2 = 0.7{A}^{′}

A′=6o{A}^{′} = {6}^{o}
Practice Ray Optics on Quantrex Academy →

More from Ray Optics

A container is filled with water (μ = 4/3 ) up to a height of 24 cm. A concave mirror is… MHT CET Medical 2026The refracting angle of a prism is 'A' and its refractive index is ((A)/(2)). The minimum… MHT CET Medical 2026A circular beam of light having diameter 'd' falls on a plane liquid surface from air.… MHT CET Medical 2026What is the total optical path length of two media in contact with thicknesses of d and… MHT CET Medical 2026A beam of white light is allowed to pass through convex lens parallel to principal axis… MHT CET Medical 2026The angle of minimum deviation produced by a thin prism in air is δ_1 . What will be the… MHT CET Medical 2026A ray of light passes through four transparent media with refractive indices μ_1 , μ_2… MHT CET Medical 2026The thin prism having refracting angle 10^ ^ ∘ is made of glass of refractive index 1.42… MHT CET Medical 2026 Full Ray Optics list All NEET PYQs