MCQOPTIONS
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MCQOPTIONS
This section includes 12 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A ray of light travels from a medium of refractive index m1 to a medium of refractive index m2. If i and r are the angle of incidence and refraction, then what is sin(i)/sin(r)? |
| A. | m1 |
| B. | m2 |
| C. | m12 |
| D. | m21 |
| Answer» E. | |
| 2. |
What is the least distance for distinct vision? |
| A. | 25 m |
| B. | 25 cm |
| C. | 25 mm |
| D. | 2.5 cm |
| Answer» C. 25 mm | |
| 3. |
At what distance the image will be formed when an object is placed 25 cm from a convex lens whose focal length is 10 cm? |
| A. | 50 cm |
| B. | 5.66 cm |
| C. | 6.66 cm |
| D. | 16.66 cm |
| Answer» E. | |
| 4. |
What type of image is produced by a concave lens? |
| A. | Always virtual and enlarged |
| B. | Always real |
| C. | Always virtual and reduced in size |
| D. | Sometimes real and sometimes virtual |
| Answer» D. Sometimes real and sometimes virtual | |
| 5. |
At what distance the object should be placed, when convex lens is used as simple magnifying glass? |
| A. | Less than one focal length |
| B. | Less than twice the focal length |
| C. | More than one focal length |
| D. | More than twice the focal length |
| Answer» B. Less than twice the focal length | |
| 6. |
How will be the image formed, when an object is placed 12 cm from a convex lens, whose focal length is 10 cm? |
| A. | Virtual and enlarged |
| B. | Virtual and reduced in size |
| C. | Real and enlarged |
| D. | Real and reduced in size |
| Answer» D. Real and reduced in size | |
| 7. |
What will be the focal length of a convex lens having power -1.5 D? |
| A. | -66.66 cm |
| B. | +66.66 cm |
| C. | +1.5 cm |
| D. | -1.5 cm |
| Answer» B. +66.66 cm | |
| 8. |
What will be the power of convex lens having focal length 50 cm? |
| A. | +2 D |
| B. | -2 D |
| C. | +50 D |
| D. | -6 D |
| Answer» B. -2 D | |
| 9. |
If the magnification is positive and greater than unity, what does it indicate? |
| A. | Virtual image |
| B. | Real image |
| C. | Distorted image |
| D. | Erect image |
| Answer» B. Real image | |
| 10. |
Name the lens used in a simple microscope. |
| A. | Biconvex |
| B. | Biconcave |
| C. | Plano-convex |
| D. | Cylindrical |
| Answer» B. Biconcave | |
| 11. |
The lens power is 1D, what will be its focal length in centimeter? |
| A. | 100 |
| B. | 0.91 |
| C. | 0.1 |
| D. | 10 |
| Answer» C. 0.1 | |
| 12. |
What is the SI unit for the power of the lens? |
| A. | Watt |
| B. | Dioptre |
| C. | Meter |
| D. | Centimeter |
| Answer» C. Meter | |