MCQOPTIONS
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MCQOPTIONS
This section includes 13 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. |
Which of the following laws do not form a Maxwell equation? |
| A. | Planck’s law |
| B. | Gauss’s Law |
| C. | Faraday’s law |
| D. | Ampere’s Law |
| Answer» B. Gauss’s Law | |
| 2. |
If the velocity of a charged particle in perpendicular electric and magnetic field is 7.27 X 106m/s and the Electric field is 6 X 106 N/c, what should be the value of magnetic field for velocity sector? |
| A. | 0.45 T |
| B. | 0.78 T |
| C. | 0.83 T |
| D. | 0.94 T |
| Answer» D. 0.94 T | |
| 3. |
The property of magnetic field to converge electrons is used in microscopes as ___________ |
| A. | Magnetic Convergence |
| B. | Magnetic plate |
| C. | Magnetic field |
| D. | Magnetic Lens |
| Answer» E. | |
| 4. |
For which body the following variation of E with r is observed? |
| A. | Line of charge |
| B. | Sheet of charge |
| C. | Solid Sphere |
| D. | Spherical Shell |
| Answer» E. | |
| 5. |
Which of the following is the expression for the continuity equation? |
| A. | ρ + J = 0 |
| B. | dρ/dt + div.J = 0 |
| C. | dρ/dt + J = 0 |
| D. | ρ + div J = 0 |
| Answer» C. dρ/dt + J = 0 | |
| 6. |
In an electromagnetic wave, the electric field of amplitude 6.2 V/m oscillates with a frequency of 2.4 X 1010 Hz. The Energy density of the wave is __________ |
| A. | 1.4 X 10-10J/m3 |
| B. | 2.4 X 10-10J/m3 |
| C. | 3.4 X 10-10J/m3 |
| D. | 4.4 X 10-10J/m3 |
| Answer» D. 4.4 X 10-10J/m3 | |
| 7. |
A point charge of 10 X 10-6 C is at the centre of a cubical Gaussian surface of sides 0.5 m. What is the flux for the surface? |
| A. | 1.12 X 105 Nm2/C |
| B. | 2.45 X 105 Nm2/C |
| C. | 3.12 X 105 Nm2/C |
| D. | 3.45 X 105 Nm2/C |
| Answer» B. 2.45 X 105 Nm2/C | |
| 8. |
In vacuum or free space, what observations are made? |
| A. | ρ = ρo, J = 0 |
| B. | ρ = 0, J = Jo |
| C. | ρ = 0, J = 0 |
| D. | ρ = ρo, J = Jo |
| Answer» D. ρ = ρo, J = Jo | |
| 9. |
Magnetic field can be produced by ___________ |
| A. | Conduction current |
| B. | Displacement current |
| C. | Both conduction and displacement current |
| D. | It is produced naturally |
| Answer» D. It is produced naturally | |
| 10. |
Differential form of Gauss’s law in magneto statics is _____________ |
| A. | div B = ρ/εo |
| B. | div B = 0 |
| C. | div B = -dB/dT |
| D. | div B = μJ |
| Answer» C. div B = -dB/dT | |
| 11. |
The entire theory of electromagnetic waves is contained in Maxwell’s equations. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 12. |
The velocity of a charged particle to keep moving in the same direction, in a region where electric and magnetic fields are perpendicular to each other, is _______________ |
| A. | E/B |
| B. | B/E |
| C. | E/B + qE/B |
| D. | B/E + qB/E |
| Answer» B. B/E | |
| 13. |
Which of the following is the expression for Lorentz force? |
| A. | qE |
| B. | q (v X B) |
| C. | ma + qE |
| D. | qE + q (v X B) |
| Answer» E. | |