McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Uncategorized topics .
Chapters
| 651. |
On heating a solid, as the separation of atoms increases the potential energy |
| A. | decreases |
| B. | remains constant |
| C. | increases |
| D. | becomes zero |
| Answer» C. increases | |
| 652. |
Temperature can't be lower than |
| A. | 0 °C |
| B. | 0 °F |
| C. | 0 K |
| D. | 0 °R |
| Answer» C. 0 K | |
| 653. |
When a substance is melted, it's temperature doesn't rise because |
| A. | energy is lost somewhere |
| B. | energy is used to break the bonds |
| C. | energy is used to make bonds |
| D. | energy is absorbed to make bonds |
| Answer» B. energy is used to break the bonds | |
| 654. |
As the object gains speed, it's G.P.E (Gravitational Potential Energy) |
| A. | increases |
| B. | remains constant |
| C. | decreases |
| D. | varies depending on altitude |
| Answer» D. varies depending on altitude | |
| 655. |
If energy loss is zero then decrease in G.P.E is equal to |
| A. | decreases in kinetic energy |
| B. | gain in kinetic energy |
| C. | constant kinetic energy |
| D. | zero kinetic energy |
| Answer» B. gain in kinetic energy | |
| 656. |
Average power of all activities of our body is |
| A. | 111 W |
| B. | 113 W |
| C. | 116 W |
| D. | 120 W |
| Answer» C. 116 W | |
| 657. |
Energy object possesses due to it's position is called |
| A. | kinetic energy |
| B. | mechanical energy |
| C. | potential energy |
| D. | chemical energy |
| Answer» C. potential energy | |
| 658. |
Change in G.P.E can be written as |
| A. | mgh |
| B. | mh |
| C. | mg |
| D. | gh |
| Answer» A. mgh | |
| 659. |
Efficiency of car engine is only about |
| A. | 10% |
| B. | 20% |
| C. | 30% |
| D. | 80% |
| Answer» B. 20% | |
| 660. |
Work is defined as |
| A. | F × S |
| B. | F × a |
| C. | m × a |
| D. | F × m |
| Answer» A. F × S | |
| 661. |
Energy transferred to stone of weight 10 N falling from top of 250 m high cliff is |
| A. | 25000 J |
| B. | 250000 J |
| C. | 2500 J |
| D. | 250 J |
| Answer» C. 2500 J | |
| 662. |
If force of 1 N moves an object through 1 m, then work done is |
| A. | 2 J |
| B. | 1 J |
| C. | 3 J |
| D. | 4 J |
| Answer» B. 1 J | |
| 663. |
SI units for energy and work are |
| A. | Joules and kg |
| B. | Joules and meter |
| C. | Joules and newton |
| D. | Joules |
| Answer» D. Joules | |
| 664. |
If the ball is thrown upwards, the energy changings are |
| A. | K.E changes to G.P.E |
| B. | G.P.E changes to K.E |
| C. | K.E changes to mechanical energy |
| D. | mechanical energy changes to K.E |
| Answer» A. K.E changes to G.P.E | |
| 665. |
1 W is equal to {{}} |
| A. | 10 J s-1 |
| B. | 1 J s |
| C. | 1 J s-1 |
| D. | 100 J s |
| Answer» C. 1 J s-1 | |
| 666. |
Work done by force of gravity on a satellite of 500 N at height is |
| A. | 0 J |
| B. | 1 J |
| C. | 2 J |
| D. | 3 J |
| Answer» A. 0 J | |
| 667. |
Rate of doing work is called |
| A. | power |
| B. | energy |
| C. | velocity |
| D. | force |
| Answer» A. power | |
| 668. |
A weight-lifter raises weights with a mass of 200 kg from the ground to a height of 1.5 m, the increase in their G.P.E is |
| A. | 1962 J |
| B. | 2940 J |
| C. | 800 J |
| D. | 1000 J |
| Answer» B. 2940 J | |
Done Studing? Take A Test.
Great job completing your study session! Now it's time to put your knowledge to the test. Challenge yourself, see how much you've learned, and identify areas for improvement. Don’t worry, this is all part of the journey to mastery. Ready for the next step? Take a quiz to solidify what you've just studied.