MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A thin prism with an angle of 3o and made from glass of refractive index 1.15 is combined with another prism made from glass and has a refractive index of 1.45. If the dispersion were to occur without deviation then what should be the angle of the second prism? |
| A. | 3o |
| B. | 0o |
| C. | 1o |
| D. | 2o |
| Answer» D. 2o | |
| 2. |
Calculate the dispersive power of crown glass where μV=1.456 and μR=1.414. |
| A. | 0.0096 |
| B. | 0.45 |
| C. | 0.96 |
| D. | 0.096 |
| Answer» E. | |
| 3. |
The Refractive index and wavelength are directly proportional to each other. |
| A. | True |
| B. | False |
| Answer» C. | |
| 4. |
What is the condition for dispersion without deviation? |
| A. | δ-δ’=0 |
| B. | δ+δ’=0 |
| C. | δ × δ‘=0 |
| D. | \(\frac {\delta}{\delta^{‘}}\)=0 |
| Answer» C. δ × δ‘=0 | |
| 5. |
Pick out the formula for dispersive power from the following. |
| A. | Dispersive power = \(\frac {mean \, deviation}{angular \, dispersion }\) |
| B. | Dispersive power = mean deviation * angular dispersion |
| C. | Dispersive power = mean deviation + angular deviation |
| D. | Dispersive power = \(\frac {angular \, dispersion}{mean \, deviation}\) |
| Answer» E. | |
| 6. |
What is the difference in a deviation between any two colors called? |
| A. | Linear dispersion |
| B. | Angular dispersion |
| C. | Mean deviation |
| D. | Mean dispersion |
| Answer» C. Mean deviation | |
| 7. |
The Refractive index of a material of a prism is different for different colors. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 8. |
Which of the following is Cauchy’s formula? |
| A. | μ=A+Bλ2+Cλ4 |
| B. | μ=A+\(\frac {B}{\lambda^2} + \frac {C}{\lambda^4}\) |
| C. | μ=A+B+CBλ |
| D. | μ=A+\(\frac {B}{\lambda}+\frac {C}{\lambda^2}\) |
| Answer» C. μ=A+B+CBλ | |
| 9. |
Identify the prism formula from the following. |
| A. | μ=\(\frac {sin [ \frac {A – \delta_m}{2} ] }{ sin(\frac {A}{2}) } \) |
| B. | μ=\(\frac {sin [ \frac {A + \delta_m}{4} ] }{ sin(\frac {A}{2}) } \) |
| C. | μ=\(\frac {sin [ \frac {A + \delta_m}{2} ] }{ sin(\frac {A}{2}) } \) |
| D. | μ=\(\frac {sin [ \frac {A + \delta_m}{2} ] }{ cos(\frac {A}{2}) } \) |
| Answer» D. μ=\(\frac {sin [ \frac {A + \delta_m}{2} ] }{ cos(\frac {A}{2}) } \) | |
| 10. |
What is the angle between the incident ray and the emergent ray in a prism called? |
| A. | Angle of deviation |
| B. | Angle of refraction |
| C. | Angle of reflection |
| D. | Angle of dispersion |
| Answer» B. Angle of refraction | |