MCQOPTIONS
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MCQOPTIONS
This section includes 16 Mcqs, each offering curated multiple-choice questions to sharpen your Science knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Law of gravitation gives the gravitational force between: |
| A. | The earth and a point mass only. |
| B. | The earth and sun only. |
| C. | Nichrome - Ni, Cr, Mn and iron |
| D. | Two charged bodies only. |
| E. | None of these |
| Answer» D. Two charged bodies only. | |
| 2. |
Unit of universal gravitational constant is: |
| A. | \[N\,{{m}^{2}}\,k{{g}^{2}}\] |
| B. | \[N\,{{m}^{2}}\,/k{{g}^{2}}\] |
| C. | Oersted |
| D. | \[N\text{/}{{m}^{2}}\text{ }k{{g}^{2}}\] |
| E. | None of these |
| Answer» C. Oersted | |
| 3. |
Acceleration due to gravity is ____ when an object is thrown vertically upwards. |
| A. | Zero |
| B. | Positive |
| C. | South-North |
| D. | Either [a] or [b] |
| E. | None of these |
| Answer» D. Either [a] or [b] | |
| 4. |
The gravitational force between two masses kept at a certain distance is p N. The same two masses are now kept in water and the distance between them are same.The gravitational force between these two masses in water is q N. Then. |
| A. | p = q |
| B. | p < q |
| C. | Electromagnet |
| D. | None of these |
| Answer» B. p < q | |
| 5. |
Consider the following figures 1 and 2. In figure 1, the mass of the body A in air is 0.2 kg. The mass of the water container (with water in it) is 0.5 kg. In figure 2, when A is completely immersed in the water of the container B, the readings of the respective balances change as shown. What is the value of X? |
| A. | 0.55 kg |
| B. | 0.15 kg |
| C. | Between poles and centre |
| D. | 0.45 kg |
| Answer» B. 0.15 kg | |
| 6. |
A ball is released from the top of a tower of height h metres. It takes T seconds to reach the ground. What is the position of ball above the ground in \[T/5\] seconds? |
| A. | \[\frac{h}{25}m\] |
| B. | \[25h\,\,m\] |
| C. | The resistance of the circuit is 0.8 ohm. |
| D. | \[\frac{24}{25}h\,\,m\] |
| Answer» E. | |
| 7. |
A geo-stationary satellite orbits around the earth in a circular orbit radius 36,000 km. Then, the time period of a spy satellite orbiting a few hundred km above the earth's surface \[\text{(}{{\text{R}}_{earth}}=\text{6},\text{4}00\,\,\text{km)}\] will approximately be |
| A. | 1/2 hr |
| B. | 1 hr |
| C. | Generator |
| D. | 4 hrs |
| Answer» D. 4 hrs | |
| 8. |
A gee-stationary satellite is orbiting the earth at a height of 6R above the surface of the earth, where R is the radius of the earth. The time period of another satellite at a height of 2.5 R from the surface of the earth is ......hours. |
| A. | 6.45 |
| B. | 4.45 |
| C. | Parabolic |
| D. | 8.75 |
| Answer» B. 4.45 | |
| 9. |
A wooden block of mass 10 gm is dropped from the top of a cliff 100 m high. Simultaneously a bullet of mass 10 gm is fired from the foot of the cliff upward with a velocity 100 m/s. The bullet and the wooden block will meet each other after a time of |
| A. | 10 s |
| B. | 0.5 s |
| C. | Power |
| D. | 7 s |
| Answer» D. 7 s | |
| 10. |
A body is thrown vertically upwards with an initial velocity u reaches a maximum height in 6s. The ratio of the distance travelled by the body in the first second to the seventh second is |
| A. | 1 : 1 |
| B. | 11 : 1 |
| C. | 40 Newton |
| D. | 1 : 11 |
| Answer» C. 40 Newton | |
| 11. |
When does the value of g at a place increase? |
| A. | With decrease in the latitude of the place |
| B. | With increase in the latitude of the place |
| C. | Premolars |
| D. | With increase in the angular rotation of the earth |
| Answer» C. Premolars | |
| 12. |
A ball is released from the top of a tower of height \['h'\] metres. It takes \[T\] seconds to reach the ground. What is the position of the ball in \[T/3\] seconds? |
| A. | \[h/9\] metres from the ground |
| B. | \[7h/9\,\,m\] m from the ground |
| C. | They are cutting and biting teeth. |
| D. | \[17h/18\,\,m\] from the ground |
| Answer» D. \[17h/18\,\,m\] from the ground | |
| 13. |
Choose the correct statement among the following. |
| A. | The upper surface of a stationary liquid is always horizontal. |
| B. | The pressure of a given liquid is directly proportional to the depth of the liquid. |
| C. | 16 |
| D. | Both [a] and [b] |
| Answer» E. | |
| 14. |
Which of the following statements regarding gravitational force existing between two bodies is true? |
| A. | The first body exerts attractive force on the second body while the second body exerts repulsive force on the first body. |
| B. | The gravitational force is zero when they are kept in vacuum. |
| C. | Eat a balanced diet. |
| D. | Force exerted by the first body on the second body is equal to the force exerted by the second body on the first. |
| Answer» E. | |
| 15. |
Which of the following is NOT a factor on which pressure at a point inside a liquid depends? |
| A. | The depth of the point below the surface of the liquid |
| B. | The nature of the liquid |
| C. | Grinding |
| D. | The shape of the containing vessel |
| Answer» E. | |
| 16. |
Points \[P,\,\,Q\] and \[R\] are in a vertical line such that\[PQ=QR\]. A ball at the top-most point \['P'\] is allowed to fall freely. What is the ratio of the times of descent through \[PQ\] and\[PR\]? |
| A. | \[\frac{3}{2}\] |
| B. | \[\frac{3}{\sqrt{2}+1}\] |
| C. | Almonds |
| D. | \[\frac{5}{2}\] |
| Answer» D. \[\frac{5}{2}\] | |