Class 9 Physics MCQs – Practice Test 15 (Chapter 9)

Work and Energy Quiz with Answers PDF Download – Test 15

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The "Work and Energy Study" App Download (iOS & Android): A system which gives an output equal to the total energy used by it is called; MCQ with answers: non-ideal system, negative system, ideal system, and slow system. Study Physics Efficiency MCQ Questions, download Google Book (Free Chapter) to complete physics courses.

Work and Energy Quiz – Practice Test 15 PDF Download

MCQ 71: A system which gives an output equal to the total energy used by it is called:

negative system
non-ideal system
ideal system
slow system

MCQ 72: The main source of heat is:

moon
stars
sun
Mars

MCQ 73: Kinetic energy with mass ‘m’ and velocity ‘v’ is:

2 mv²
1/2 mv
2m ⁄ v²
1/2 mv²

MCQ 74: The ratio of required form of energy obtained from a system as output to the total energy given to it as input is called its:

efficiency
power
stress
strain

MCQ 75: The SI unit of power is:

joules
newton
watt
omega

Work and Energy Quiz App & e-Book – Class 9 Physics Study Material

Transfer of Heat MCQs

Dynamics MCQs

Thermal Properties of Matter MCQs

Gravitation MCQs

Work and Energy MCQs

Matter Properties MCQs

Kinematics MCQs

Turning Effect of Forces MCQs

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