1 kilo watt =
10 watts
100 watts
500 watts
1000 watts
A compressed spring possesses
Kinetic energy
Elastic potential energy
Electrical energy
Magnetic energy
Unit of power is
Watt
Joule
Newton
Pascal
When the force acts opposite to the direction of displacement
Work done is negative
Work done is positive
Work done is neutral
No work is done
Which of the following is due to position or state of strain?
Potential energy
Mechanical energy
When we increase the speed of an object, it kinetic energy
Also increases
Decreases
Does not change
First increases then decreases
Which one of these physicists is from Britain?
Thomas Alva Edison
James Prescott Joule
C.V.Raman
None of these
The kinetic energy possessed by an objects of mass, m and moving with a uniform velocity v is
K.E = 2 m v2
K.E = 1/2 m v2
K.E = 1/4 m v2
K.E = 4m v2
Total energy of the universe remains
The same
Different
Constant
Variable
What is the velocity of body of mass 100 g having a K.E. of 20 J?
2 m s-1
20 m s-1
40 m s-1
400 m/s