MCQOPTIONS
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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. | 3<sup>o</sup> |
| B. | 0<sup>o</sup> |
| C. | 1<sup>o</sup> |
| D. | 2<sup>o</sup> |
| Answer» D. 2<sup>o</sup> | |
| 2. |
Calculate the dispersive power of crown glass where V=1.456 and R=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. | - =0 |
| B. | + =0 |
| C. | <sup> </sup>=0 |
| D. | ( frac { delta}{ delta^{ }} )=0 |
| Answer» C. <sup> </sup>=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. | =A+B <sup>2</sup>+C <sup>4</sup> |
| B. | =A+ ( frac {B}{ lambda^2} + frac {C}{ lambda^4} ) |
| C. | =A+B+CB |
| D. | =A+ ( frac {B}{ lambda}+ frac {C}{ lambda^2} ) |
| Answer» C. =A+B+CB | |
| 9. |
Identify the prism formula from the following. |
| A. | = u2061 ( frac {sin [ frac {A delta_m}{2} ] }{ sin u2061( frac {A}{2}) } ) |
| B. | = u2061 ( frac {sin [ frac {A + delta_m}{4} ] }{ sin u2061( frac {A}{2}) } ) |
| C. | = u2061 ( frac {sin [ frac {A + delta_m}{2} ] }{ sin u2061( frac {A}{2}) } ) |
| D. | = u2061 ( frac {sin [ frac {A + delta_m}{2} ] }{ cos u2061( frac {A}{2}) } ) |
| Answer» D. = u2061 ( frac {sin [ frac {A + delta_m}{2} ] }{ cos u2061( 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 | |