MCQOPTIONS
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MCQOPTIONS
This section includes 17 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The sum of e.m.f around any loop equals |
| A. | sum of potential difference |
| B. | sum of current |
| C. | sum of charges passing through it per second |
| D. | sum of resistances |
| Answer» B. sum of current | |
| 2. |
The wavelength of slow moving neutrons is about |
| A. | 10-20 m |
| B. | 10-34 m |
| C. | 10-10 m |
| D. | 10-19 m |
| Answer» D. 10-19 m | |
| 3. |
The horizontal component of a bouncing ball is |
| A. | unaffected by gravity |
| B. | affected by gravity |
| C. | none of above |
| D. | affected by weight |
| Answer» B. affected by gravity | |
| 4. |
In order to keep a body moving in a circle, there exists a force on it that is directed toward the center of the circle. This force is known as: |
| A. | Centripetal force |
| B. | Centrifugal force |
| C. | None of the above |
| D. | Gravitational Force |
| Answer» B. Centrifugal force | |
| 5. |
The current in a circuit if resistance of 15Ω and potential difference of 3.0 V is applied across it's ends is |
| A. | 0.0833333333333333 |
| B. | 0.0416666666666667 |
| C. | 0.20 A |
| D. | 0.5 A |
| Answer» D. 0.5 A | |
| 6. |
The projectile will attain its maximum range if it is fired at an angle of |
| A. | 47° |
| B. | 30° |
| C. | 45° |
| D. | 90° |
| Answer» D. 90° | |
| 7. |
Whenever there is force on magnetic pole, there exists |
| A. | electric field |
| B. | magnetic field |
| C. | voltage |
| D. | current |
| Answer» C. voltage | |
| 8. |
A stone is thrown upwards with initial velocity of 20 ms-1, the height that stone will reach would be |
| A. | 30 m |
| B. | 20 m |
| C. | 50 m |
| D. | 40 m |
| Answer» C. 50 m | |
| 9. |
If the time period of an oscillation is 0.40 s then it's frequency is |
| A. | 2.5 Hz |
| B. | 2 Hz |
| C. | 3.5 Hz |
| D. | 3 Hz |
| Answer» B. 2 Hz | |
| 10. |
Diffraction of slow moving electrons is used to estimate |
| A. | nature of atoms |
| B. | arrangement of atoms in metals |
| C. | position of atoms in metalloids |
| D. | number of atoms in metals |
| Answer» C. position of atoms in metalloids | |
| 11. |
If a student drops a stone from a cliff of height 30 m and the time it takes to reach the ground is 2.6 s, then the acceleration due to gravity is |
| A. | 10 ms-2 |
| B. | 9 ms-2 |
| C. | 8.8 ms-2 |
| D. | 4 ms-2 |
| Answer» D. 4 ms-2 | |
| 12. |
A rectangle-shaped open-to-sky tank of water has a length of 2 m and a width of 1 m. If the atmospheric pressure is assumed to be 100 kPa and thickness of the tank walls is assumed to be negligible, calculate the force exerted by the atmosphere on the surface of water. |
| A. | 50 kN |
| B. | 20 kN |
| C. | 200 kN |
| D. | 100 kN |
| Answer» D. 100 kN | |
| 13. |
Young's modulus is defined as |
| A. | tensile stress ⁄ tensile strain |
| B. | tensile strain ⁄ tensile stress |
| C. | length / area |
| D. | tensile stress × tensile strain |
| Answer» B. tensile strain ⁄ tensile stress | |
| 14. |
The total number of magnetic field lines passing through an area is called |
| A. | magnetic flux |
| B. | magnetic flux density |
| C. | voltage |
| D. | e.m.f |
| Answer» B. magnetic flux density | |
| 15. |
The units of stress are |
| A. | Joules |
| B. | Newton |
| C. | Watt |
| D. | Pascal |
| Answer» E. | |
| 16. |
With the gel between skin and transducer the percentage of reflected intensity of ultrasonic is |
| A. | 0.0005 |
| B. | 0.0003 |
| C. | 0.0008 |
| D. | 0.0006 |
| Answer» C. 0.0008 | |
| 17. |
The surface area of a typical person is about |
| A. | 2 m2 |
| B. | 1 m2 |
| C. | 4 m2 |
| D. | 3 m2 |
| Answer» B. 1 m2 | |