SATHEE: Optics 4 Question 12

Optics 4 Question 12

12. A thin prism $P_{1}$ with angle $4^{\circ}$ and made from glass of refractive index 1.54 is combined with another thin prism $P_{2}$ made from glass of refractive index 1.72 to produce dispersion without deviation. The angle of the prism $P_{2}$ is

(a) ${5.33}^{\circ}$

(b) $4^{\circ}$

(d) ${2.6}^{\circ}$

(1990, 2M)

Show Answer

Answer:

Correct Answer: 12. (c)

Solution:

Deviation $δ = (μ - 1) A$

Given, $δ_{net} = 0$

$\begin{aligned} ∴ (μ_{1} - 1) A_{1} = (μ_{2} - 1) A_{2} \\ or \\ A_{2} = \frac{(μ_{1} - 1)}{(μ_{2} - 1)} A_{1} = \frac{(1.54 - 1)}{(1.72 - 1)} (4^{\circ}) = 3^{\circ} \end{aligned}$

Optics 4 Question 12

12. A thin prism $P_{1}$ with angle $4^{\circ}$ and made from glass of refractive index 1.54 is combined with another thin prism $P_{2}$ made from glass of refractive index 1.72 to produce dispersion without deviation. The angle of the prism $P_{2}$ is

Answer:

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

Test Platform

Sample Mock Test

Mentorship

NCERT Exercise Video Solution

Optics 4 Question 12

12. A thin prism P1 with angle 4∘ and made from glass of refractive index 1.54 is combined with another thin prism P2 made from glass of refractive index 1.72 to produce dispersion without deviation. The angle of the prism P2 is

Answer:

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

Test Platform

Sample Mock Test

Mentorship

NCERT Exercise Video Solution

Menu

12. A thin prism $P_{1}$ with angle $4^{\circ}$ and made from glass of refractive index 1.54 is combined with another thin prism $P_{2}$ made from glass of refractive index 1.72 to produce dispersion without deviation. The angle of the prism $P_{2}$ is