MCQOPTIONS
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MCQOPTIONS
This section includes 93 Mcqs, each offering curated multiple-choice questions to sharpen your UPSEE knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A proton is moving at a speed of 3.8 × 106 m/s in the positive x-direction. A magnetic field of 0.25 × 10-4 T is in the positive z-direction. The magnitude of the force acting on the proton is: |
| A. | 2.5 × 10-18 N |
| B. | 6.1 × 10-18 N |
| C. | 1.5 × 10-17 N |
| D. | 3.1 × 10-17 N |
| Answer» D. 3.1 × 10-17 N | |
| 2. |
Galileo’s law of __________ was Newton's starting point which he formulated as the 'First Law of motion'. |
| A. | inertia |
| B. | momentum |
| C. | energy |
| D. | equilibrium |
| Answer» B. momentum | |
| 3. |
Gymnasts apply some coarse substance on their hands to |
| A. | Produce heat between the palms |
| B. | Decrease friction |
| C. | Increase friction |
| D. | Change friction from rolling to sliding |
| Answer» D. Change friction from rolling to sliding | |
| 4. |
A block of mass 10 kg is kept on a rough inclined plane as shown in the figure. A force of 3 N is applied on the block. The coefficient of static friction between the plane and the block is 0.6. What should be the minimum value of force P, such that the block does not move downward? (Take g = 10 ms-2) |
| A. | 32 N |
| B. | 18 N |
| C. | 23 N |
| D. | 25 N |
| Answer» B. 18 N | |
| 5. |
A horizontal force F produces an acceleration of \(6m/s^2\) on a block resting on a smooth horizontal surface. The same force produces an acceleration of \(3 m/s^2\) on a second block resting on a smooth horizontal surface. If the two blocks are tied together and the same force acts, the acceleration produced will be |
| A. | \(1 m/s^2\) |
| B. | \(2 m/s^2\) |
| C. | \(4.5 m/s^2\) |
| D. | \(9 m/s^2\) |
| Answer» C. \(4.5 m/s^2\) | |
| 6. |
In order to slide a huge box lying on the ground in her room, Reshma should apply a force which is greater than which of the following forces ? |
| A. | Normal force |
| B. | Muscular force |
| C. | Static friction |
| D. | Gravitational force |
| Answer» D. Gravitational force | |
| 7. |
A body is acted upon by two unequal forces in opposite directions, but not in one line. The effect is that the body will have |
| A. | only rotational motion. |
| B. | only translational motion. |
| C. | neither the rotational nor the translational motion |
| D. | rotational as well as translational motion. |
| Answer» E. | |
| 8. |
A body falls freely from rest from the top of a tall cliff. The distance it travelled in the first second is (g = 10 m/sec2) |
| A. | 9.8 m |
| B. | 10 m |
| C. | 5 m |
| D. | 1 m |
| Answer» D. 1 m | |
| 9. |
A scooter of mass 120 kg is moving with a uniform velocity of 108 km/h. the force required to stop the vehicle in 10 s, |
| A. | 720 N |
| B. | 180 N |
| C. | 1200 N |
| D. | 360 N |
| Answer» E. | |
| 10. |
Dirt can be removed from a carpet by shaking it vigorously for some time in a process that is based on |
| A. | Second law of motion |
| B. | Both third and second laws of motion |
| C. | Third law of motion |
| D. | First law of motion |
| Answer» E. | |
| 11. |
Among the following, the weakest force is |
| A. | gravitational force |
| B. | electric force |
| C. | nuclear force |
| D. | magnetic force |
| Answer» B. electric force | |
| 12. |
Displacement-time graph of a moving body is shown in figure. How much force is acting on the body? |
| A. | 12.5 N |
| B. | Zero |
| C. | 25 N |
| D. | 5 N |
| Answer» C. 25 N | |
| 13. |
How long does light take to reach the earth from the Sun? |
| A. | About 4 minutes |
| B. | About 8 minutes |
| C. | About 24 minutes |
| D. | About 8 hours |
| Answer» C. About 24 minutes | |
| 14. |
A balloon is filled with air. The mass of the air in the balloon is 10 gr. A small hole is made to the balloon and released. The balloon moves up with an average speed of 5 cm/s and shrinks completely in 5 seconds. Find the average form acting on the balloon. |
| A. | 10 dynes |
| B. | 5 dynes |
| C. | 15 dynes |
| D. | 20 dynes |
| Answer» B. 5 dynes | |
| 15. |
A large metallic box of mass 45 kg rests on a wooden floor. A force of 185 N is found to be just sufficient to start it moving across the wooden floor. Then the coefficient of static friction between the metallic box and the wooden floor is nearly (take g = 10 m/s2) |
| A. | 0.41 |
| B. | 0.19 |
| C. | 0.45 |
| D. | 0.24 |
| Answer» B. 0.19 | |
| 16. |
A subway train starts from rest at a station and accelerates at a rate of 3 ms-2 for 10s. It then runs at a constant speed for 20s and decelerates at 5 ms-2 unit it stops at the next station. The distance between the two stations is: |
| A. | 840 m |
| B. | 740 m |
| C. | 640 m |
| D. | 340 m |
| Answer» B. 740 m | |
| 17. |
A ball is dropped from a window of 19.62 meters high. How long will it take to reach the ground? |
| A. | 1 sec |
| B. | 4 sec |
| C. | 2 sec |
| D. | 0.5 sec |
| Answer» D. 0.5 sec | |
| 18. |
A person throws an object on a horizontal frictionless plane surface. It is noticed that there are two forces acting on this object -(i) gravitational pull and (ii) normal reaction of the surface. According to the third law of motion, the net resultant force is zero. Which one of the following can be said for the motion of the object? |
| A. | The object will move with acceleration. |
| B. | The object will move with deceleration. |
| C. | The object will move with constant speed, but varying direction. |
| D. | The object will move with constant velocity. |
| Answer» E. | |
| 19. |
A subway train starts from rest at a station and accelerates at a rate of 2 ms-2 for 10 s. It then runs at a constant speed for 30 s and deaccelerates at 4ms-2 until it stops at the next station. The distance between the two stations is: |
| A. | 650 m |
| B. | 700 m |
| C. | 750 m |
| D. | 800 m |
| Answer» D. 800 m | |
| 20. |
A 60 kg man is weighed by a balance as 54 kg in a lift which is accelerated downwards. The acceleration of the lift is |
| A. | 1.26 m / s2 |
| B. | 1.98 m / s2 |
| C. | 0.98 m / s2 |
| D. | 1.76 m / s2 |
| Answer» D. 1.76 m / s2 | |
| 21. |
A uniform rope is suspended from the roof of a building. The rope breaks if the tension in the rope is greater than 700 N.A man of mass 50 kg climbs up the rope. Find the maximum acceleration with which he can climb up the rope (g = 10 m/s2) |
| A. | 7 m/s2 |
| B. | 2 m/s2 |
| C. | \(\frac{7}{2}{\rm{\;}}m/{s^2}\) |
| D. | 4 m/s2 |
| Answer» E. | |
| 22. |
An open jeep is moving on a straight path with a uniform velocity. A person sitting on the front seat projects a ball vertically upwards. After some time the ball: |
| A. | falls back in his hand |
| B. | falls in front of the jeep |
| C. | falls on the back seat of the jeep |
| D. | falls outside the jeep |
| Answer» B. falls in front of the jeep | |
| 23. |
A seesaw is an example of which concept of physics? |
| A. | Current |
| B. | Time |
| C. | Electricity |
| D. | Force |
| Answer» E. | |
| 24. |
An Odometer is an instrument used to measure ________ in automobiles. |
| A. | Speed |
| B. | Odour |
| C. | Direction |
| D. | Distance |
| Answer» E. | |
| 25. |
A 0.5 kg ball is accelerated from rest to 12 m/s in 0.30 s. The force applied on the ball during its motion is |
| A. | 20 N |
| B. | 6.0 N |
| C. | 40 N |
| D. | 3.6 N |
| Answer» B. 6.0 N | |
| 26. |
"Everybody continues to be in its state of rest or of uniform motion in a straight line unless compelled by some external force to act otherwise." This statement is _______. |
| A. | Newton's 1st Law |
| B. | Newton's 2nd Law |
| C. | Law of conservation of energy |
| D. | Newton's 3rd Law |
| Answer» B. Newton's 2nd Law | |
| 27. |
A piston having mass m = 3 kg executes pure simple harmonic motion, whose displacement in meters is given by x = 0.05 sin(10 t). Its inertia force at time t = 0 will be |
| A. | 0 N |
| B. | – 0.15 N |
| C. | – 1.5 N |
| D. | – 15 N |
| Answer» B. – 0.15 N | |
| 28. |
If we move the tree branch fast, some leaves are separated from the tree. It is caused by ________. |
| A. | Velocity |
| B. | Free fall |
| C. | Impulse |
| D. | Inertia |
| Answer» E. | |
| 29. |
A body of mass 2 kg is moving with a constant velocity of 4m/sec on friction less table. The force required to keep the body moving with the same velocity will be- |
| A. | 8 N |
| B. | Zero |
| C. | 12 N |
| D. | 2 N |
| Answer» C. 12 N | |
| 30. |
Name the physical quantity that is equal to the product of force and velocity. |
| A. | Energy |
| B. | Acceleration |
| C. | Work |
| D. | Power |
| Answer» E. | |
| 31. |
A 10 N force is applied on a body which produces in it an acceleration of 2 m/s2. The mass of the body is: |
| A. | 5 kg |
| B. | 10 kg |
| C. | 15 kg |
| D. | 20 kg |
| Answer» B. 10 kg | |
| 32. |
If a force of 250 N acts on a body at rest, the momentum required is 125 kg m/s. The time for which the force acts on the body is |
| A. | 0.5 s |
| B. | 0.2 s |
| C. | 0.1 s |
| D. | 0.3 s |
| Answer» B. 0.2 s | |
| 33. |
An object moves in a circular path with a constant speed. Which of the following statements is correct? |
| A. | The centripetal acceleration of the object is smaller for a gentle curve (i.e., curve of larger radius) than that for a sharp curve (i.e., curve of smaller radius). |
| B. | The centripetal acceleration is greater for a gentle curve than that for sharp curve. |
| C. | The centripetal acceleration is the same for both, the gentle and sharp curves |
| D. | The centripetal acceleration causes the object to slow down. |
| Answer» B. The centripetal acceleration is greater for a gentle curve than that for sharp curve. | |
| 34. |
A body is in equilibrium under the action of three forces \(\vec{F}_1, \vec{F}_2\) and \(\vec{F}_3\).Then choose the wrong statement among the following : |
| A. | \(\vec{F}_1 + \vec{F}_2 +\vec{F}_3 = 0\) |
| B. | \(|F_1 - F_2|\le F_3 \le |F_1 + F_2|\) |
| C. | \(\vec{F}_1, \vec{F}_2\) and \(\vec{F}_3\) can be represented by the three sides of a triangle |
| D. | \(F_1+F_2+F_3=0\) |
| Answer» E. | |
| 35. |
A body of mass 5 kg moving with a velocity of 10 ms-1attains a velocity of 35 ms-1 for 25 s by applying a force. What is the magnitude of the force? |
| A. | 1 N |
| B. | 2 N |
| C. | 5 N |
| D. | 10 N |
| Answer» D. 10 N | |
| 36. |
Conservation of momentum in a collision between particles can be understood on the basis of: |
| A. | Newton’s first law of motion |
| B. | Newton’s second law of motion |
| C. | Both Newton’s second law of motion and Newton’s third law of motion |
| D. | Conservation of energy |
| Answer» D. Conservation of energy | |
| 37. |
If the retardation produced due to braking is 3.1 m/s2, the braking efficiency is |
| A. | 20% |
| B. | 31% |
| C. | 25% |
| D. | 35% |
| Answer» C. 25% | |
| 38. |
A particle is moving with speed \({\rm{v}} = {\rm{b}}\sqrt {\rm{x}} \) along positive x-axis. Calculate the speed of the particle at time t = τ (assume that the particle is at origin at t = 0) |
| A. | \(\frac{{{{\rm{b}}^2}{\rm{\tau }}}}{4}\) |
| B. | \(\frac{{{{\rm{b}}^2}{\rm{\tau }}}}{2}\) |
| C. | \({{\rm{b}}^2}{\rm{\tau }}\) |
| D. | \(\frac{{{{\rm{b}}^2}{\rm{\tau }}}}{{\sqrt 2 }}\) |
| Answer» C. \({{\rm{b}}^2}{\rm{\tau }}\) | |
| 39. |
A thief stole a box full of jewelry of W kg and while carrying it on his head jumped down from third storey of the building. Before he reached the ground, he experienced a load of |
| A. | Zero |
| B. | Infinite |
| C. | Less than W |
| D. | Greater than W |
| Answer» B. Infinite | |
| 40. |
A body moving from rest along a straight line with an acceleration which equation is \(a = 4 - \frac{{{t^2}}}{g}\) where a-m/s2 and t-seconds. Its velocity and distance travelled in 6 seconds: |
| A. | 10 m/s, 40 m |
| B. | 12 m/s, 50m |
| C. | 16 m/s, 60 m |
| D. | 14 m/s, 55 m |
| Answer» D. 14 m/s, 55 m | |
| 41. |
A bullet of mass 20 g has an initial speed of 1 ms-1, just before it starts penetrating a mud wall of thickness 20 cm. If the wall offers a mean resistance of 2.5 × 10-2 N, the speed of the bullet after emerging from the other side of the wall is closer to: |
| A. | 0.1 ms-1 |
| B. | 0.7 ms-1 |
| C. | 0.3 ms-1 |
| D. | 0.4 ms-1 |
| Answer» C. 0.3 ms-1 | |
| 42. |
If an object moves at a non-zero constant acceleration for a certain interval of time, then the distance it covers in that time |
| A. | depends on its initial velocity |
| B. | is independent of its initial velocity |
| C. | increases linearly with time |
| D. | depends on its initial displacement |
| Answer» B. is independent of its initial velocity | |
| 43. |
Definition of Force can be stated from ________. |
| A. | Newton’s second law of motion |
| B. | Newton’s first law of motion |
| C. | Newton’s third law of motion |
| D. | Newton’s law of gravitation |
| Answer» C. Newton’s third law of motion | |
| 44. |
An engine pulls a vehicle of total weight 1000 kN up an incline of 30° (with the horizontal). If the tractive resistance is 10% of the weight, the power required to move at a uniform speed of 10 m/s is equal to |
| A. | 11,000 kW |
| B. | 6000 HP |
| C. | 6000 kW |
| D. | 3000 HP |
| Answer» D. 3000 HP | |
| 45. |
A horse pulling a tonga moves forward due to the force exerted by? |
| A. | The horse on the ground with his feet |
| B. | The horse on the tonga |
| C. | The ground on the horse’s feet |
| D. | The tonga on the horse |
| Answer» B. The horse on the tonga | |
| 46. |
A man weighing 70 kg is coming down in a lift. If the cable of the lift breaks suddenly, the weight of the man would become |
| A. | 70kg |
| B. | 35kg |
| C. | 140 kg |
| D. | Zero |
| Answer» E. | |
| 47. |
How is the kinetic energy of a moving object effected If the net work done on it is positive? |
| A. | Decreases |
| B. | Increases |
| C. | Remains constant |
| D. | Become zero |
| Answer» C. Remains constant | |
| 48. |
A man is sitting in a train which is moving with a velocity of 60 Km/hour. His speed with respect to the train is: |
| A. | 10/3 m/s |
| B. | 60 m/s |
| C. | Infinite |
| D. | Zero |
| Answer» E. | |
| 49. |
A boy standing at the top of a 20-metre-high tower drops a stone. Assuming g = 10 m/s2, the velocity with which the stone hit the ground is: |
| A. | 10 m/s |
| B. | 20 m/s |
| C. | 15 m/s |
| D. | 25 m/s |
| Answer» C. 15 m/s | |
| 50. |
If a football is thrown vertically up, then the force of gravity acting on it_________. |
| A. | is opposite to the direction of motion of the ball |
| B. | becomes zero at the maximum height |
| C. | is in the same direction of motion of the ball |
| D. | increases as it rises up |
| Answer» B. becomes zero at the maximum height | |