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MCQOPTIONS
This section includes 1777 Mcqs, each offering curated multiple-choice questions to sharpen your 9th Class knowledge and support exam preparation. Choose a topic below to get started.
| 1001. |
The distance -time graph for uniform motion is a: |
| A. | Straight line |
| B. | Curved line |
| C. | Circular line |
| D. | All the above |
| E. | None of these |
| Answer» B. Curved line | |
| 1002. |
The velocity time graph for a constant velocity is: |
| A. | Straight line |
| B. | Curved line |
| C. | Circular line |
| D. | All the above |
| E. | None of these |
| Answer» B. Curved line | |
| 1003. |
Two balls M and N of masses 3g and 6g are in motion with velocities 2m/s and 1 m/s respectively. Their momenta are in the ratio: |
| A. | 2 : 1 |
| B. | 0.0430555555555556 |
| C. | 3 : 2 |
| D. | 1 : 1 |
| E. | None of these |
| Answer» E. None of these | |
| 1004. |
A water tanker filled up to 2/3 of its height is moving with a uniform speed On sudden application of the brake, the water in the tank would |
| A. | Move backward |
| B. | move forward |
| C. | Be unaffected |
| D. | rise upwards |
| E. | None of these |
| Answer» C. Be unaffected | |
| 1005. |
Which one of the following formula describes the impulse? |
| A. | Mass \[\times \] Acceleration |
| B. | Force \[\times \] time |
| C. | Force/Area |
| D. | Change in velocity/time |
| E. | None of these |
| Answer» C. Force/Area | |
| 1006. |
A cyclist does not come to rest immediately after he stops pedalling due to: |
| A. | Buoyant force |
| B. | Inertia of motion |
| C. | Drag force |
| D. | All the above |
| E. | None of these |
| Answer» C. Drag force | |
| 1007. |
A force of 5 N on a body increases its velocity from 10 m/s to 15 m/s in 3 s. Find the mass of the body |
| A. | 10 kg |
| B. | 13 kg |
| C. | 3 kg |
| D. | 12 kg |
| E. | None of these |
| Answer» D. 12 kg | |
| 1008. |
A wooden block of mass 1kg and volume \[1.7\times {{10}^{-3}}{{m}^{3}}\] is completely immersed in water. The buoyant force exerted by water on the wooden block is ____. Density of water is\[1000\,kg/{{m}^{3}}\]. |
| A. | 16 N |
| B. | 18 N |
| C. | 16.6 N |
| D. | 21 N |
| E. | None of these |
| Answer» D. 21 N | |
| 1009. |
In the given distance time graph which object is moving with uniform motion? |
| A. | Object P |
| B. | Object Q |
| C. | Object R |
| D. | All the above |
| E. | None of these |
| Answer» B. Object Q | |
| 1010. |
A boy is wearing bracelet of mass 350 g. How much force is he exerting on the shoes? |
| A. | 30 N |
| B. | 30.8 N |
| C. | 3.43 N |
| D. | 38 |
| E. | None of these |
| Answer» D. 38 | |
| 1011. |
A body (without air space) of mass 200 g and volume \[300\,c{{m}^{3}}\] is put in water. Will it float or sink? (Density of water is \[1\,g/\,c{{m}^{3}}\]) |
| A. | Sink |
| B. | Float |
| C. | Either [a] or [b] |
| D. | Cannot be determined |
| E. | None of these |
| Answer» C. Either [a] or [b] | |
| 1012. |
What would be the final velocity of a body if it comes to the rest? |
| A. | 0 |
| B. | 1 |
| C. | -1 |
| D. | All the above |
| E. | None of these |
| Answer» B. 1 | |
| 1013. |
Unit of linear momentum is: |
| A. | Pascal |
| B. | \[m/{{s}^{2}}\] |
| C. | \[kg/m\text{ }s\] |
| D. | \[kg\,m{{s}^{-1}}\] |
| E. | None of these |
| Answer» E. None of these | |
| 1014. |
The velocity-time graph of moving object is shown in the given figure. The object: |
| A. | Moves with a uniform speed. |
| B. | Moves with a uniform velocity. |
| C. | Moves with a non-uniform acceleration. |
| D. | Is at rest |
| E. | None of these |
| Answer» D. Is at rest | |
| 1015. |
An object of mass 0.2 kg is kept at rest. A force of 3N acts on it for 5 s. Find the distance moved by a particle in 5 s. |
| A. | 150 m |
| B. | 187.5 m |
| C. | 100 m |
| D. | 180 m |
| E. | None of these |
| Answer» C. 100 m | |
| 1016. |
A passenger in a moving train tosses a coin which falls behind him. It means that motion of the train is: |
| A. | Accelerated |
| B. | uniform |
| C. | Retarded |
| D. | along circular tracks |
| E. | None of these |
| Answer» B. uniform | |
| 1017. |
A quantity has a value of\[-10.0\text{ }m/s\]. It may be the: |
| A. | Speed of a particle |
| B. | Velocity of a particle |
| C. | Acceleration of a particle |
| D. | Position of a particle |
| E. | None of these |
| Answer» C. Acceleration of a particle | |
| 1018. |
A bus has a uniform acceleration of \[3\,m/{{s}^{2}}\]. What distance will it cover in 10s after starting from rest? |
| A. | 100 m |
| B. | 150 m |
| C. | 500 m |
| D. | 100 km |
| E. | None of these |
| Answer» C. 500 m | |
| 1019. |
If a body is moving with a uniform velocity, then acceleration is: |
| A. | Increases |
| B. | Decreases |
| C. | Zero |
| D. | Negative |
| E. | None of these |
| Answer» D. Negative | |
| 1020. |
What would be the acceleration of a body if it moves with uniform velocity? |
| A. | 0 |
| B. | 1 |
| C. | -1 |
| D. | All the above |
| E. | None of these |
| Answer» B. 1 | |
| 1021. |
What would be momentum of a body of mass 50 kg when it is moving with a uniform speed of 5 m/s? |
| A. | 100 kg. m/s |
| B. | 150 kg. m/s |
| C. | 200 kg. m/s |
| D. | 250 kg. m/s |
| E. | None of these |
| Answer» E. None of these | |
| 1022. |
What force would be needed to produce an acceleration of \[6\text{ }m/{{s}^{2}}\] in a ball of mass 6 kg? |
| A. | 12 N |
| B. | 24 N |
| C. | 36 N |
| D. | 48 N |
| E. | None of these |
| Answer» D. 48 N | |
| 1023. |
What is the acceleration produced by a force of 15 N exerted on an object of mass 5 kg? |
| A. | \[\text{1 m/ }{{\text{s}}^{\text{2}}}\] |
| B. | \[\text{2}\,\text{m/ }{{\text{s}}^{\text{2}}}\] |
| C. | \[3\,m\,/{{s}^{2}}\] |
| D. | \[4\,m/{{s}^{2}}\] |
| E. | None of these |
| Answer» D. \[4\,m/{{s}^{2}}\] | |
| 1024. |
Which one of the following is called first equation of motion? |
| A. | \[v=u+at\] |
| B. | \[\text{s=ut}\,\text{+}\,\frac{\text{1}}{\text{2}}\text{a}{{\text{t}}^{\text{2}}}\] |
| C. | \[{{\text{v}}^{\text{2}}}\,\text{=}\,{{\text{u}}^{\text{2}}}\,\text{+}\,\text{2as}\] |
| D. | All the above |
| E. | None of these |
| Answer» B. \[\text{s=ut}\,\text{+}\,\frac{\text{1}}{\text{2}}\text{a}{{\text{t}}^{\text{2}}}\] | |
| 1025. |
A car weighing 1000 kg moving with a velocity of 40 m/s retards uniformly coming to rest in 10 s. Calculate the initial momentum of the car. |
| A. | 48,000 kg m/s |
| B. | 40,000 kg m/s |
| C. | 38,000 kg m/s |
| D. | 33,000 kg m/s |
| E. | None of these |
| Answer» C. 38,000 kg m/s | |
| 1026. |
Which of the following actions a force can do? |
| A. | Can move a stationary object. |
| B. | Can stop a moving object. |
| C. | Can change the speed of a moving object. |
| D. | All the above |
| E. | None of these |
| Answer» E. None of these | |
| 1027. |
What force would be needed to produce an acceleration of \[6m/{{s}^{2}}\] on a ball of mass 6 kg?? |
| A. | 1 N |
| B. | 36 N |
| C. | 12 N |
| D. | 360 N |
| E. | None of these |
| Answer» C. 12 N | |
| 1028. |
Who gave the laws of motion? |
| A. | Ernst |
| B. | Newton |
| C. | Linnaeus |
| D. | Schwartz |
| E. | None of these |
| Answer» C. Linnaeus | |
| 1029. |
The rate of change of velocity per unit time is known as: |
| A. | Velocity |
| B. | Acceleration |
| C. | Speed |
| D. | Motion |
| E. | None of these |
| Answer» C. Speed | |
| 1030. |
Speed of a car is 25 m/s. How long will it take to cover the distance of 90 km? |
| A. | 1 hour |
| B. | 2 hours |
| C. | 2 hours |
| D. | 4 hours |
| E. | None of these |
| Answer» B. 2 hours | |
| 1031. |
What would be the initial velocity of a body if it starts from rest? |
| A. | 1 |
| B. | -1 |
| C. | 0 |
| D. | All the above |
| E. | None of these |
| Answer» D. All the above | |
| 1032. |
What is the S. I. unit of acceleration? |
| A. | \[m/min\] |
| B. | \[m/g\] |
| C. | \[m/s\] |
| D. | \[m/{{s}^{2}}\] |
| E. | None of these |
| Answer» E. None of these | |
| 1033. |
A body of mass 50 kg acquires a speed of 20 m/s under a force of 100 n in time |
| A. | 5 s |
| B. | 10 s |
| C. | 15 s |
| D. | 20 s |
| Answer» C. 15 s | |
| 1034. |
A body rolling freely on the surface of the earth eventually comes to rest because |
| A. | It has mass |
| B. | It suffers friction |
| C. | It has inertia of rest |
| D. | It has momentum |
| Answer» C. It has inertia of rest | |
| 1035. |
What force should be applied on a 5 kg body s that it has a downward acceleration of\[\text{4m}/{{\text{s}}^{\text{2}}}\]? |
| A. | 69 N upwards |
| B. | 69 N downwards |
| C. | 29 N upwards |
| D. | 29 N downwards |
| Answer» D. 29 N downwards | |
| 1036. |
Two masses, each equal to m, are attached to one another by a massless string passing over a smooth pulley. The tension in the string is |
| A. | \[mg\] |
| B. | \[2m\] |
| C. | \[\frac{mg}{2}\] |
| D. | Zero |
| Answer» B. \[2m\] | |
| 1037. |
A weight of 290 N and another 200 N are suspended by a rope on either side of a frictionless pulley. The acceleration of each weight is |
| A. | \[\text{1}\text{.5 m}/{{\text{s}}^{\text{2}}}\] |
| B. | \[\text{1}\text{.8 m}/{{\text{s}}^{\text{2}}}\] |
| C. | \[\text{2}\text{.2 m}/{{\text{s}}^{\text{2}}}\] |
| D. | \[\text{2}\text{.5 m}/{{\text{s}}^{\text{2}}}\] |
| Answer» C. \[\text{2}\text{.2 m}/{{\text{s}}^{\text{2}}}\] | |
| 1038. |
Two boxes, one of mass 20 kg and the other of mass 40 kg, are sliding down a frictionless inclined plane that makes an angle of \[30{}^\circ \] with the horizontal. The respective acceleration in \[\text{m}/{{\text{s}}^{\text{2}}}\] are |
| A. | \[\text{9}\text{.8},\text{9}\text{.8}\] |
| B. | \[\text{4}\text{.9},\text{9}\text{.8}\] |
| C. | \[\text{9}\text{.8},\text{4}\text{.9}\] |
| D. | \[\text{4}\text{.9},\text{4}\text{.9}\] |
| Answer» E. | |
| 1039. |
A bullet of mass a and velocity b is fired into a large block of wood of mass c, the final velocity of the system is |
| A. | \[\frac{b}{c+b}\] |
| B. | \[\frac{a+b}{c}a\] |
| C. | \[\frac{a}{a+c}a\] |
| D. | \[\frac{a+c}{a}b\] |
| Answer» D. \[\frac{a+c}{a}b\] | |
| 1040. |
A force of 12 N gives an object an acceleration of\[\text{4 m}/{{\text{s}}^{\text{2}}}\]. The force required to give it an acceleration of \[\text{1}0\text{ m}/{{\text{s}}^{\text{2}}}\]is |
| A. | 15 N |
| B. | 20 N |
| C. | 25 N |
| D. | 30 N |
| Answer» E. | |
| 1041. |
In which of the following cases force may not be required to keep the |
| A. | particle going on the circle |
| B. | Particle going along a straight line |
| C. | Momentum of the particle constant |
| D. | Acceleration of the particle constant |
| Answer» C. Momentum of the particle constant | |
| 1042. |
A body of mass m moving with a constant velocity V hits another body of the same mass moving with the same velocity v but in the opposite direction and sticks to it. The velocity of the compound body after collision is |
| A. | V |
| B. | 2v |
| C. | Zero |
| D. | \[\frac{\upsilon }{2}\] |
| Answer» D. \[\frac{\upsilon }{2}\] | |
| 1043. |
Two bodies of masses 0.03 kg, and 0.04 kg, are tied to the ends of a massless string. This string passes over the frictionless pulley. The tension in the string is |
| A. | 0.336 N |
| B. | 0.294 N |
| C. | 683N |
| D. | 0.392 N |
| Answer» B. 0.294 N | |
| 1044. |
A force produces an acceleration of \[5.0\,\,cm\,\,{{s}^{-2}}\] when it acts on a body of mass\[20\,\,g\]. Find the force acting on the body. |
| A. | \[1\times {{10}^{-3}}N\] |
| B. | \[2\times {{10}^{-3}}N\] |
| C. | \[4\times {{10}^{-3}}N\] |
| D. | \[5\times {{10}^{-3}}N\] |
| Answer» B. \[2\times {{10}^{-3}}N\] | |
| 1045. |
A ball of mass 0-1 kg is thrown against a wall. It strikes the wall normally with a velocity of 30 \[\text{m}{{\text{s}}^{\text{-1}}}\]and rebounds from there with a velocity of 20\[\text{m}{{\text{s}}^{\text{-1}}}\]. The impulse of the force exerted by the ball on the wall is |
| A. | 0.5 Ns |
| B. | 50 Ns |
| C. | 5 Ns |
| D. | 1 Ns |
| Answer» D. 1 Ns | |
| 1046. |
A body of mass 2 kg is sliding with a constant velocity of 4 m/sec on a frictionless horizontal table. The force required to keep the body moving with the same velocity is |
| A. | \[8\,N\] |
| B. | \[ON\] |
| C. | \[2\,\times \,10{{\,}^{4}}\,N\] |
| D. | \[\frac{1}{2}N\] |
| Answer» C. \[2\,\times \,10{{\,}^{4}}\,N\] | |
| 1047. |
When will a body under the action of several forces have zero acceleration? |
| A. | When the vector sum of all the forces acting on the body is zero. |
| B. | When a body is very heavy |
| C. | When the body is very light |
| D. | When the body is a point body |
| Answer» B. When a body is very heavy | |
| 1048. |
Every action has reaction. These action-reaction are |
| A. | Equal, opposite and acting on the same body |
| B. | Equal, in the same direction and acting on same body |
| C. | Equal, opposite and acting on different bodies |
| D. | Equal, in same direction and acting on different bodies. |
| Answer» D. Equal, in same direction and acting on different bodies. | |
| 1049. |
A pilot wants to fly his aeroplane in atmosphere free space |
| A. | He cannot do it |
| B. | He can do it easily |
| C. | He can do it but with difficulty |
| D. | None of the above |
| Answer» B. He can do it easily | |
| 1050. |
When a man sitting on a chair tries to lift himself by applying a force on the chair, |
| A. | He cannot lift on the chair |
| B. | He can lift easily |
| C. | He can lift himself but very little |
| D. | None of the above |
| Answer» B. He can lift easily | |