MCQOPTIONS
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MCQOPTIONS
This section includes 20 Mcqs, each offering curated multiple-choice questions to sharpen your Science knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What kind of motion it is if an athlete is moving on a circular track? |
| A. | Circular motion |
| B. | Rectilinear motion |
| C. | \[\text{N/c}{{\text{m}}^{\text{2}}}\] |
| D. | All the above |
| E. | None of these |
| Answer» B. Rectilinear motion | |
| 2. |
Upward force exerted by the fluid on the partially immersed solid in that fluid is called: |
| A. | Pressure |
| B. | Buoyant force |
| C. | A is true but R is a false. |
| D. | Momentum |
| E. | None of these |
| Answer» C. A is true but R is a false. | |
| 3. |
The Velocity-time graph of an object moving in a fixed direction is shown in the given figure. The object: |
| A. | Is at rest |
| B. | Moves with a uniform velocity. |
| C. | \[{{f}_{A}}>{{f}_{B}}>{{f}_{D}}>{{f}_{C}}\] |
| D. | Moves with a uniform acceleration. |
| E. | None of these |
| Answer» E. None of these | |
| 4. |
A train is moving at a speed of 60 m/s at 10.00 a.m. and at 80 m/s at 10:02 a.m. Assuming that the train moves along a straight track and the acceleration is constant, the value of acceleration is: |
| A. | \[300\,m/{{s}^{2}}\] |
| B. | \[1/6\,m/{{s}^{2}}\] |
| C. | 6m2 |
| D. | \[6\,m/{{s}^{2}}\] |
| E. | None of these |
| Answer» C. 6m2 | |
| 5. |
An object undergoes an acceleration of \[6\,m/{{s}^{2}}\]starting from rest. Find the distance travelled in one second. |
| A. | 4 m |
| B. | 8 m |
| C. | 24 dynes |
| D. | 32 m |
| E. | None of these |
| Answer» C. 24 dynes | |
| 6. |
Which of the following options is correct? (i) Force of gravitation on a body is equal to the true weight of the body. (ii) A person standing in an elevator moving downwards with constant acceleration finds his weight less than actual. |
| A. | Only (i) is correct. |
| B. | Only (ii) is correct. |
| C. | higher than |
| D. | Neither (i) nor (ii) is correct. |
| Answer» D. Neither (i) nor (ii) is correct. | |
| 7. |
1 dyne is equal to |
| A. | 980 gwt |
| B. | \[\frac{1}{980}kg\] gwt |
| C. | Container A |
| D. | none of these |
| Answer» C. Container A | |
| 8. |
If a body of mass M collides against a wall with velocity V and rebounds with the same speed, then its change of momentum will be |
| A. | Zero |
| B. | MV |
| C. | Both statements are correct |
| D. | \[-2MV\] |
| Answer» D. \[-2MV\] | |
| 9. |
A stretching force of 1000 Newton is applied at one end of a spring balance and an equal stretching force is applied at the other end at the same time. The reading of the balance will be |
| A. | 2000 N |
| B. | 0 N |
| C. | Weight |
| D. | 500N |
| Answer» D. 500N | |
| 10. |
During a planned man oeuvre in a space flight, a free-floating astronaut A pushes another Free floating astronaut B, the mass of A being greater than that of B. Then, the magnitude of the force exerted by astronaut A on astronaut B is |
| A. | Equal to zero |
| B. | Equal to the force exerted by B on A |
| C. | \[A\to (p);B\to (r);C\to (s);D\to (q)\] |
| D. | Less than the force exerted by B on A |
| Answer» C. \[A\to (p);B\to (r);C\to (s);D\to (q)\] | |
| 11. |
A body of mass 100 g is sliding from an inclined plane of inclination \[30{}^\circ \]. What is the frictional force experienced, if \[\mu =1.7\]? |
| A. | \[1.7\times \sqrt{2}\times \frac{1}{\sqrt{3}}N\] |
| B. | \[1.7\times \sqrt{3}\times \frac{1}{2}N\] |
| C. | 8 Pa |
| D. | \[1.7\times \sqrt{2}\times \frac{\sqrt{2}}{\sqrt{3}}N\] |
| Answer» C. 8 Pa | |
| 12. |
A jet of water (density \[\rho \]) with a cross-sectional area a is striking against a wall at an angle \[\theta \] to the normal and rebounds elastically. If the velocity of water in the jet is v, the normal force acting on the wall is |
| A. | \[2\,\,a{{\upsilon }^{2\,\,}}\,p\,\,\cos \,\theta \] |
| B. | \[a{{\upsilon }^{2\,\,}}\,p\,\,\cos \,\theta \] |
| C. | Hammering of a nail into wood |
| D. | \[a\upsilon \,\,p\,\,\cos \,\theta \] |
| Answer» B. \[a{{\upsilon }^{2\,\,}}\,p\,\,\cos \,\theta \] | |
| 13. |
Force of friction between the floor and a wooden block of mass M and area of surface A is F. Force of friction between the floor and a block of mass 2 M and area of surface A will be |
| A. | 2 F |
| B. | F |
| C. | \[{{F}_{A}}={{F}_{B}}<{{F}_{C}}\] |
| D. | \[\sqrt{2}F\] |
| Answer» B. F | |
| 14. |
A block of mass 5 kg is placed on a rough inclined plane. The inclination of the lane is gradually increased till the block just begin to slide down The inclination of the plane is then 3 in 5 The coefficient of friction between the block and the plane is \[\left( \text{g}=\text{ 1}0\text{ m}/{{\text{s}}^{\text{2}}} \right)\] |
| A. | 3/5 |
| B. | 3/4 |
| C. | The upper scale will read 10 kg and the lower scale zero |
| D. | 2/3 |
| Answer» C. The upper scale will read 10 kg and the lower scale zero | |
| 15. |
A mass of 100 g strikes the wall with a speed of \[\text{5 m }{{\text{s}}^{-1}}\] at an angle as shown in figure and it rebounds with the same speed. If the contact time is \[2\times {{10}^{-3}}s,\] what is the force applied by the wall? |
| A. | \[\text{250}\sqrt{\text{3}}\,\,\text{N to right}\] |
| B. | \[\text{250 N to right}\] |
| C. | 105 |
| D. | \[\text{250 N to left}\] |
| Answer» D. \[\text{250 N to left}\] | |
| 16. |
A motorcycle and a car are moving on a horizontal road with the same velocity.If they are brought to rest by the application of brakes, which provided equal retardation, then |
| A. | Motorcycle will stop at shorter distance |
| B. | Car will stop at a shorter distance |
| C. | has no definite volume |
| D. | Nothing can be predicted. |
| Answer» D. Nothing can be predicted. | |
| 17. |
A vehicle of 100 kg is moving with a velocity of 5m/ s. To stop it in 1/10 s, the required force in opposite direction is : |
| A. | 5000 N |
| B. | 500 N |
| C. | Surface R |
| D. | 1000 N |
| Answer» B. 500 N | |
| 18. |
A body of mass 2 kg collides with a wall with speed 100 m/s and rebounds with the same speed. If the time of contact was 1/50 s, the force exerted on the wall is: |
| A. | 8 N |
| B. | \[\text{2}\times \text{1}{{0}^{\text{4}}}\text{ N}\] |
| C. | (a)-(ii), (b)-(i), (c)-(iv), (d)-(iii) |
| D. | \[{{10}^{4}}\,N\] |
| Answer» C. (a)-(ii), (b)-(i), (c)-(iv), (d)-(iii) | |
| 19. |
A person is sitting in a travelling train and facing the engine. He tosses up a coin and the coin falls behind him. It can be concluded that the train is |
| A. | Moving forward and gaining speed |
| B. | Moving forward and losing speed |
| C. | Only (i) and (iii) |
| D. | Moving backward with uniform |
| Answer» B. Moving forward and losing speed | |
| 20. |
Two bodies in contact and if the contact is frictionless the contact force is _____ to the common surface and is known as ____ |
| A. | Parallel, frictional force |
| B. | Perpendicular, frictional force |
| C. | \[{{10}^{6}}Pa\] |
| D. | Parallel, normal force |
| Answer» D. Parallel, normal force | |