MCQOPTIONS
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MCQOPTIONS
This section includes 1292 Mcqs, each offering curated multiple-choice questions to sharpen your General Knowledge knowledge and support exam preparation. Choose a topic below to get started.
| 751. |
An object with a mass of 22 kg moving with a velocity of 5 m/s possesses a kinetic energy of : |
| A. | 275 J |
| B. | 110 J |
| C. | 2750 J |
| D. | 110 J |
| Answer» B. 110 J | |
| 752. |
An object with a constant speed |
| A. | is not accelerated |
| B. | might be accelerated |
| C. | is always accelerated |
| D. | also has a constant velocity |
| Answer» C. is always accelerated | |
| 753. |
An object that has kinetic energy must be |
| A. | At an elevated position |
| B. | Falling |
| C. | At rest |
| D. | Moving |
| Answer» E. | |
| 754. |
An object, starting from rest, moves with constant acceleration of 4 m/s2. After 8 s, its speed is |
| A. | 16 m/s |
| B. | 8 m/s |
| C. | 32 m/s |
| D. | 4 m/s |
| Answer» D. 4 m/s | |
| 755. |
An object weighing 20 kg is raised through a height of 2 m. What will be the work done by the force of gravity in this process? |
| A. | 400 J |
| B. | 50 J |
| C. | 40 J |
| D. | 100 J |
| Answer» B. 50 J | |
| 756. |
An object of mass 15 kg is moving with a uniform velocity of 4m/s. What is the kinetic energy possessed by the object? |
| A. | 12 J |
| B. | 60 J |
| C. | 120 J |
| D. | 1.2 J |
| Answer» D. 1.2 J | |
| 757. |
An object of mass 10 kg is moving with a uniform velocity of 4. Find the kinetic energy possessed by the object._x005F_x000D_ |
| A. | 80 W |
| B. | 80 Pa |
| C. | 80 N |
| D. | 80 J |
| Answer» E. | |
| 758. |
An object of 5.0 kg is raised through a height of 2.0m. The work done in the process is |
| A. | 49 J |
| B. | 10 J |
| C. | 19.6 J |
| D. | 98 J |
| Answer» E. | |
| 759. |
An object of mass 1 kg has a potential energy of 2 J relative to the ground, when it is at a height of: Take  g=10 m/s2_x005F_x000D_ |
| A. | 0.2 m |
| B. | 1 m |
| C. | 0.1 m |
| D. | 0.5 m |
| Answer» B. 1 m | |
| 760. |
An object is placed on the principal axis of a cortex lens of focal length 10 cm. If the distance of the object from the lens is 30 cm, what is the distance of the image formed? |
| A. | 20 cm |
| B. | 15 cm |
| C. | 30 cm |
| D. | 10 cm |
| Answer» C. 30 cm | |
| 761. |
An object of 1.2 cm height is placed 30 cm before a concave mirror of focal length of 20 cm toget a real image at a distance of 60 cm from the mirror. What is the height of the image formed? |
| A. | -3.6 cm |
| B. | -2.4 cm |
| C. | 1.2 cm |
| D. | 2.4 cm |
| Answer» C. 1.2 cm | |
| 762. |
An object is placed in front of a convex mirror at a point between infinity and the pole of the mirror. The image formed is_x005F_x000D_  _x005F_x000D_ |
| A. | real and enlarged. |
| B. | real and diminished |
| C. | virtual and enlarged |
| D. | virtual and diminished |
| Answer» E. | |
| 763. |
An object of 2 kg is moving with an acceleration of 4Â m/s2. The net force acting on it is_x005F_x000D_ |
| A. | 4.0 N |
| B. | 8.0 N |
| C. | 0.5 N |
| D. | 2.0 N |
| Answer» C. 0.5 N | |
| 764. |
An object of 10 kg is moving with a speed of 2 m/s. The kinetic energy of the object is |
| A. | 20 J |
| B. | 25 J |
| C. | 10 J |
| D. | 40 J |
| Answer» B. 25 J | |
| 765. |
An object is placed at the centre of curvature of a concave mirror. Its image is formed at_x005F_x000D_ |
| A. | a point beyond centre of curvature |
| B. | a point between focus and centre of curvature |
| C. | the centre of curvature |
| D. | the focus |
| Answer» C. the centre of curvature | |
| 766. |
An object is placed at a distance of 20 cm from a convex lens of focal length 10 cm. The image is formed at a distance of |
| A. | 15 cm |
| B. | 5 cm |
| C. | 20 cm |
| D. | 10 cm |
| Answer» D. 10 cm | |
| 767. |
An object is placed 30 cm before a concave mirror of focal length of 20 cm to get a real image. What will be the distance of the image from the mirror? |
| A. | 60 cm |
| B. | 20 cm |
| C. | 30 cm |
| D. | 40 cm |
| Answer» B. 20 cm | |
| 768. |
An object having the capability to do work is said to possess |
| A. | Inertia |
| B. | Force |
| C. | Pressure |
| D. | Energy |
| Answer» E. | |
| 769. |
An object is in static equilibrium when it is _______. |
| A. | at rest |
| B. | moving in a circular path |
| C. | moving with uniform velocity |
| D. | accelerating at high speed |
| Answer» B. moving in a circular path | |
| 770. |
An object having a mass 'm' moving with a velocity 'v' possesses a kinetic energy 'K'. If its velocity is doubled, its kinetic energy will become: |
| A. | K/2 |
| B. | 2K |
| C. | 4K |
| D. | K/4 |
| Answer» D. K/4 | |
| 771. |
An object has a potential energy of 400 J with a mass of 20 kg and gravity of 10 N . The height of the object is:_x005F_x000D_ |
| A. | 0.5 m |
| B. | 4 m |
| C. | 1 m |
| D. | 2 m |
| Answer» E. | |
| 772. |
An object at rest will remain at rest and an object in motion will remain in motion until and unless it is acted upon by an external force. This is Newton's |
| A. | First law |
| B. | Second law |
| C. | Third law |
| D. | Fourth law |
| Answer» B. Second law | |
| 773. |
An object having a capability to do work is said to possess __________. |
| A. | force |
| B. | moment |
| C. | momentum |
| D. | energy |
| Answer» E. | |
| 774. |
An object floats in water with one-third of its volume under water. The density of the object is n times the density of water where n is:_x005F_x000D_ |
| A. | 44348 |
| B. | 44256 |
| C. | 44287 |
| D. | 44228 |
| Answer» C. 44287 | |
| 775. |
An object at rest may have |
| A. | Momentum |
| B. | Potential energy |
| C. | Velocity |
| D. | Kinetic energy |
| Answer» C. Velocity | |
| 776. |
An incident ray strikes a plane mirror at an angle of 20 deg with the mirror. The angle between the incident ray and reflected ray is ____._x005F_x000D_ |
| A. | 140 deg |
| B. | 40 deg |
| C. | 50 deg |
| D. | 20 deg |
| Answer» B. 40 deg | |
| 777. |
An integrated circuit is more advantages than a coventional circuit because |
| A. | they make the electric equipments more reliable and easier for servicing |
| B. | a faulty part of a conventional circuit may be difficult to locate and repair |
| C. | if a part of the integrated circuit fails the entire circuit is simply replaced |
| D. | all the above |
| Answer» E. | |
| 778. |
An image formed by a concave mirror on a screen is called __________? |
| A. | Virtual image |
| B. | Real image |
| C. | Inverted image |
| D. | Erect image |
| Answer» C. Inverted image | |
| 779. |
An image formed by a plane mirror, that cannot be obtained on a screen is called _______. |
| A. | Virtual image |
| B. | Real image |
| C. | Inverted image |
| D. | Erect image |
| Answer» B. Real image | |
| 780. |
An example of longitudinal waves (in gas as a medium) is ______. |
| A. | heat waves |
| B. | radio waves |
| C. | electromagnetic waves |
| D. | sound waves |
| Answer» E. | |
| 781. |
An electric lamp of 100 W is used for 5 hours per day. How much energy will be consumed by the lamp in 3 days? |
| A. | 1.5 units |
| B. | 0.5 units |
| C. | 5.0 units |
| D. | 1.0 units |
| Answer» B. 0.5 units | |
| 782. |
An electron and a proton starting from rest get accelerated through potential difference of 100kV. The final speeds of the electron and the proton are Ve and Vp respectively. Which of the following relations is correct? |
| A. | Ve > Vp |
| B. | Ve < Vp |
| C. | Ve = Vp |
| D. | Cannot be determined |
| Answer» B. Ve < Vp | |
| 783. |
An ideal gas cannot be |
| A. | liquified |
| B. | solidified |
| C. | Both A & B |
| D. | None of the above |
| Answer» B. solidified | |
| 784. |
An electric motor converts |
| A. | Mechanical energy into electrical energy |
| B. | Thermal energy into electrical energy |
| C. | Electrical energy into mechanical energy |
| D. | Radiant energy into electrical energy |
| Answer» D. Radiant energy into electrical energy | |
| 785. |
An echo is returned in 3 s. What is the distance of the reflecting surface from the source, considering the speed of sound as 342 ms-1?_x005F_x000D_ |
| A. | 513 m |
| B. | 644 m |
| C. | 342 m |
| D. | 171 m |
| Answer» B. 644 m | |
| 786. |
An electric iron of 750 W is used for S hours per day. Then the energy consumed in one day by the iron is: |
| A. | 6 units |
| B. | 600 units |
| C. | 0.6 units |
| D. | 60 units |
| Answer» B. 600 units | |
| 787. |
An electric fuse is based on |
| A. | the chemical effect of the current |
| B. | the magnetic effect of the current |
| C. | the heating effect of the current |
| D. | All of the above |
| Answer» D. All of the above | |
| 788. |
An electric bulb of 100 W is used 8 hours per day. The energy consumed by the bulb in one day is ....... units._x005F_x000D_ |
| A. | 800 |
| B. | 80 |
| C. | 8 |
| D. | 0.8 |
| Answer» E. | |
| 789. |
An earthquake of magnitude 6 on Richter scale has ______________ times more destructive energy than an earthquake of magnitude 4. |
| A. | ten |
| B. | hundred |
| C. | five |
| D. | thousand |
| Answer» E. | |
| 790. |
An air bubble in water will act like a |
| A. | convex lens |
| B. | convex mirror |
| C. | concave lens |
| D. | concave mirror |
| Answer» D. concave mirror | |
| 791. |
An atom bomb based upon the principal of ________ |
| A. | Nuclear fission |
| B. | Nuclear fussion |
| C. | Controlled chain reaction |
| D. | None of these |
| Answer» B. Nuclear fussion | |
| 792. |
An earthquake of magnitude _________________ on Richter scale has thousand times more destructive energy than an earthquake of magnitude 4._x005F_x000D_ |
| A. | 5 |
| B. | 7 |
| C. | 6 |
| D. | 8 |
| Answer» D. 8 | |
| 793. |
An athlete in the Olympic mines covers a distance of 100 in in 10 s. His kinetic energy can be estimated to be in the range of:_x005F_x000D_ |
| A. | 200 J- 500 J |
| B. | 200000 J-500000 J |
| C. | 20000 J -50000 J |
| D. | 2000 J- 5000 J |
| Answer» E. | |
| 794. |
An anemometer measures which of the following ? |
| A. | Speed of light |
| B. | Speed of wind |
| C. | Speed of water current |
| D. | Speed of satellites |
| Answer» C. Speed of water current | |
| 795. |
Ampere second could be the unit of |
| A. | Power |
| B. | Energy |
| C. | Conductance |
| D. | Charge |
| Answer» D. Charge | |
| 796. |
Air pressure is usually highest when the air is |
| A. | warm and moist |
| B. | cool and dry |
| C. | warm and dry |
| D. | cool and moist |
| Answer» E. | |
| 797. |
Air pressure is measured in which of the following units? |
| A. | Steridian |
| B. | kg/mts |
| C. | Newton |
| D. | Pascal |
| Answer» E. | |
| 798. |
Air moves from the region where the air _____________________________. |
| A. | humidity is high to the region where the humidity is low |
| B. | pressure is low to the region where the pressure is high |
| C. | pressure is high to the region where the pressure is low_x005F_x000D_ |
| D. | humidity is low to the region where the humidity is high_x005F_x000D_ |
| Answer» D. humidity is low to the region where the humidity is high_x005F_x000D_ | |
| 799. |
Alternate freezing and thawing often leads to ______. |
| A. | Creep |
| B. | Slumps |
| C. | Mud flows |
| D. | Earth flows |
| Answer» B. Slumps | |
| 800. |
After removing two electrons from helium atom it become? |
| A. | UV rays |
| B. | Alpha particle |
| C. | Gama particle |
| D. | X rays |
| Answer» C. Gama particle | |