Work and Energy
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
ideal system
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The energy use in solar cookers, solar distillation plants, solar power plants is known asA. chemical energy
B. solar energy
C. thermal energy
D. nuclear energy
The capacity of a body to do work is called
A. energy
B. work load
C. kinetic energy
D. potential energy
During the interconversion of energy from one form to other forms, the total energy at any time remains
A. constant
B. zero
C. increasing
D. decreasing
The energy stored in coal is
A. kinetic energy
B. potential energy
C. chemical energy
D. nuclear energy
Fossil fuels are burnt to produce electricity in
A. thermal power
B. chemical power
C. nuclear power
D. solar cars
The water stored in damns is used for irrigation and also to generate
A. heat energy
B. electrical energy
C. thermal energy
D. chemical energy
The main source of heat is
A. moon
B. stars
C. sun
D. Mars
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