MCQOPTIONS
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MCQOPTIONS
This section includes 22 Mcqs, each offering curated multiple-choice questions to sharpen your ECAT & MCAT Entry Test knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A closed surface contains two equal and opposite charges. The net electric flux from the surface will be |
| A. | negative |
| B. | positive |
| C. | zero |
| D. | data is insufficient |
| Answer» D. data is insufficient | |
| 2. |
A choke is used as a resistance in |
| A. | DC circuit |
| B. | AC circuits |
| C. | Both AC and DC circuit |
| D. | Full wave rectifier circuit |
| Answer» C. Both AC and DC circuit | |
| 3. |
A chimney works works best if air exposed to the chimmey is |
| A. | stationary |
| B. | moving |
| C. | moving slowly |
| D. | moving fast |
| Answer» E. | |
| 4. |
A charge of 0.10C accelerated through a potential difference of 1000V acquires kinetic energy |
| A. | 200J |
| B. | 100J |
| C. | 1000J |
| D. | 100 eV |
| Answer» C. 1000J | |
| 5. |
A changing magnetic flux produces around itself an induced |
| A. | Magnetic field |
| B. | Electric field |
| C. | Electromagnetic force |
| D. | Artificial gravitational field |
| Answer» D. Artificial gravitational field | |
| 6. |
A certain stress applied to an elastic material produces a certain strain in it. If the elastic limit is not exceeded the energy gained per unit volume of the material is given by |
| A. | Stress/strain |
| B. | (stress/strain) |
| C. | Stress x strain |
| D. | (Stress / strain) |
| Answer» E. | |
| 7. |
A central force is that which |
| A. | can produce torque |
| B. | can not produce torque |
| C. | some time can produce torque some time can not |
| D. | has no relation with torque |
| Answer» C. some time can produce torque some time can not | |
| 8. |
A capacitor of capacitance 30?F is charged by a constant current of 10mA. If initially the capacitor was uncharged what is the time taken for the potential difference across the capacitor to reach 300V? |
| A. | 0.9sec |
| B. | 15 sec |
| C. | 1.5x105sec |
| D. | 0.9x102sec |
| Answer» B. 15 sec | |
| 9. |
A body will be in complete equilibrium when it is satisfying |
| A. | Ist condition of equilibrium |
| B. | 2nd condition of equilibrium |
| C. | both Ist and 2nd condition of equilibrium |
| D. | impossible |
| Answer» D. impossible | |
| 10. |
A body of 2 kg is suspended form the ceiling of an elevator moving up with an acceleration g. Its apparent weight in the elevator will be |
| A. | 9.8 N |
| B. | 19.6 N |
| C. | 129.4 N |
| D. | 39.2 N |
| Answer» E. | |
| 11. |
A body is moving with uniform velocity. Its |
| A. | speed changes |
| B. | acceleration changes |
| C. | direction of motion changes |
| D. | displacement from origin changes |
| Answer» E. | |
| 12. |
A body is falling freely under gravity. How much distance it falls during an interval of time between 1st and 2nd seconds of its motion, taking g=10? |
| A. | 14 m |
| B. | 20 m |
| C. | 5 m |
| D. | 25 m |
| Answer» B. 20 m | |
| 13. |
A body in equilibrium |
| A. | always at rest |
| B. | always in uniform motion |
| C. | may be at rest or in uniform motion |
| D. | may be at rest or in motion |
| Answer» D. may be at rest or in motion | |
| 14. |
A body can have consutant velocity when it follows a |
| A. | elliptical path |
| B. | circular path |
| C. | parabolic path |
| D. | rectilinear path |
| Answer» E. | |
| 15. |
A 25eV electron has a speed of |
| A. | 2 x 106m/sec |
| B. | 3 x 106m/sec |
| C. | 5 x 106m/sec |
| D. | 4 x 106m/sec |
| Answer» C. 5 x 106m/sec | |
| 16. |
A 100?F capacitor with 12V source in series having frequency 50Hz will offer a capacitive reactance of about |
| A. | 32? |
| B. | 62? |
| C. | 50? |
| D. | 100? |
| Answer» B. 62? | |
| 17. |
A 10? electric heater is connected to a 220V 50Hz mains supply. What is the peak value of the potential difference across the heater element? |
| A. | 220V |
| B. | 220/ ??2V |
| C. | 110V |
| D. | 220 ??2V |
| Answer» E. | |
| 18. |
3rd law of motion explains |
| A. | effect of force |
| B. | existence of a force |
| C. | existence of two forces |
| D. | existence of pair of forces in nature |
| Answer» E. | |
| 19. |
2nd law of motion gives the definition of |
| A. | force |
| B. | acceleration |
| C. | velocity |
| D. | both force and acceleration |
| Answer» C. velocity | |
| 20. |
1st law of motion gives the definition of |
| A. | rest |
| B. | motion |
| C. | velocity |
| D. | force |
| Answer» E. | |
| 21. |
0.001 kg mass will be equivalent to |
| A. | 2.50 GWh |
| B. | 25.00 GWh |
| C. | 0.26 GWh |
| D. | 250 GWh |
| Answer» C. 0.26 GWh | |
| 22. |
1024 can be written in scientific notation as |
| A. | 1.024x103 |
| B. | 2 Raised to power 10 |
| C. | 0.000976 |
| D. | 1/0.00097 |
| Answer» B. 2 Raised to power 10 | |