Concepts Of Physics MCQ Edition [Volume 1]
- Exam
- Concepts Of Physics MCQ Edition [Volume 1]
- Subject
- Physics
- Chapter
- Dispersion and Spectra
Concepts Of Physics MCQ Edition [Volume 1] · Physics · Dispersion and Spectra
A specific material exhibits refractive indices of 1.56 , 1.60 ,...
A specific material exhibits refractive indices of , , and for red, yellow, and violet light, respectively. Evaluate the angular dispersion produced by a thin prism with an angle of 6^{}^{{}^{\circ}} constructed from this material.
Options
- A0.12^{}^{{}^{\circ}}
- B3.60^{}^{{}^{\circ}}
- C4.08^{}^{{}^{\circ}}
- D0.72^{}^{{}^{\circ}}
Correct answer
D. 0.72^{}^{{}^{\circ}}
Step-by-step solution
The angular dispersion produced by a thin prism is given by the difference in the angles of deviation for violet and red light.
The formula for angular dispersion is
Given values are , , and A = 6^{}^{{}^{\circ}}
Substituting the values into the formula:
\theta = (1.68 - 1.56) \times 6^{}^{{}^{\circ}}
\theta = 0.12 \times 6^{}^{{}^{\circ}}
\theta = 0.72^{}^{{}^{\circ}}
The formula for angular dispersion is
Given values are , , and A = 6^{}^{{}^{\circ}}
Substituting the values into the formula:
\theta = (1.68 - 1.56) \times 6^{}^{{}^{\circ}}
\theta = 0.12 \times 6^{}^{{}^{\circ}}
\theta = 0.72^{}^{{}^{\circ}}