## Physics XI Karachi Board [Work Power and Energy] MCQS Online Test - 1

Physics Aptitude Test. **22 **Questions from Chapter 07 Work Power and Energy.
**Q1. **When force and displacement are in opposite direction then the work done is said to be

**Q2.** The work done in the gravitational field is independent of

**Q3. **The field in which work done along a closed path is zero is known as

**Q4.** The unit of energy is the same as those of

**Q5. ** Kinetic and potential energies are

**Q6.** A body is dragged on a horizontal surface. Its potential energy

**Q8. ** The coal petroleum and natural gas are called

**Q9. **The work done by centripetal force is equal to

**Q10. **According to Einstein’s theory of relativity the KE of a body can be represented by the formula

**Q11. **The scalar product of force and displacement is called

**Q12. **If the force and displacement are at right angle to each other then the work done is

**Q13. ** A force s exerted in lifting a 100 kg mass straight up to a height of 10m. The work done is

**Q14. ** A body moves at a distance of 10m along horizontal by a force of 5 N. If the work done is 25J then the angle between them is

**Q15. ** The work given to a machine is called

**Q16. ** Work done against friction is the example of

**Q17. ** The work done by the gravitational force around a closed path is

**Q18. ** Which of the following is a conservative filed.

**Q19. ** The scalar products of force and velocity is

**Q20. ** Horse power (hp) is related with watt by the relation

**Q21. ** In British engineering system the unit of power is

**Q22. ** Your weight is 600N. You climb a hill of 10 meter high in 10 sec. You posses power of

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