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 bar magnet of the magnetic moment 5 Am2 has poles 20 cm apart. Calculate the pole strength. |
| A. | 250 Am |
| B. | 4 Am |
| C. | 100 Am |
| D. | 25 Am |
| Answer» E. | |
| 2. |
A magnetized needle of the magnetic moment 20 JT-1 is placed at 60o with the direction of the uniform magnetic field of magnitude 9 T. What is the torque acting on the needle? |
| A. | 225 J |
| B. | 625 J |
| C. | 155.8 J |
| D. | 318 J |
| Answer» D. 318 J | |
| 3. |
A magnetic dipole of length 10 cm has pole strength of 20 Am. Find the magnetic moment of the dipole. |
| A. | 2 Am2 |
| B. | 200 Am2 |
| C. | 20 Am2 |
| D. | 0.2 Am2 |
| Answer» B. 200 Am2 | |
| 4. |
A magnet can only repel another magnet. So, ‘X’ is a surer test of magnetism. Identify X. |
| A. | Directive |
| B. | Repulsion |
| C. | Remanence |
| D. | Hysteresis |
| Answer» C. Remanence | |
| 5. |
Magnetic lines of force always form open loops. State true or false. |
| A. | True |
| B. | False |
| Answer» C. | |
| 6. |
Which of the following is a natural magnet? |
| A. | Magnetic needle |
| B. | Bar magnet |
| C. | Magnetite |
| D. | Horseshoe magnet |
| Answer» D. Horseshoe magnet | |
| 7. |
Give the SI unit of magnetic dipole moment. |
| A. | A-2m |
| B. | Am-2 |
| C. | A2m |
| D. | Am2 |
| Answer» E. | |
| 8. |
Which of the following is not a basic property of magnets. |
| A. | Magnet exists as a monopole |
| B. | Attractive property |
| C. | Directive property |
| D. | Like poles repel and unlike poles attract |
| Answer» B. Attractive property | |
| 9. |
Identify the direction in which a thin long piece of magnet comes to rest when suspended freely. |
| A. | East-west |
| B. | North-south |
| C. | Northeast-southeast |
| D. | Northwest-southwest |
| Answer» C. Northeast-southeast | |
| 10. |
Which among the following is not attracted by magnets? |
| A. | Iron |
| B. | Cobalt |
| C. | Copper |
| D. | Nickel |
| Answer» D. Nickel | |