Gravitational P.E of a body has:
A. no formula
B. a formula mgh only
C. a formula
D. no general formula
The highest value of escape velocity in solar system is planet:
A. Earth
B. Neptune
C. Jupiter
D. Moon
The tides raise the mater in the see roughly in a day:
A. once
B. twice
C. four time
D. eight time
Work done on the body equals to the:
A. change in its K.E always
B. change in its P.E always
C. change in its K.E and change in its P.E
D. neither change in K.E and nor change in its P.E
Slope of work time graph is equal to:
A. displacement
B. acceleration
C. power
D. energy
The relation between horse power and watt is:
A. 1 hp = 546 watts
B. 1 hp = 746 watts
C. 1 hp = 1000 watts
D. 1 hp = 946 watts
On a clear day at noon the solar energy reaching the earth is:
A. 1.44kw/m2
B. 1.4kw/m2
C. 1 kw/m2
D. none
_____cells converts solar energy into electrical energy:
A. rotory
B. photovoltaic
C. galvanic
D. non of these
Geothermal energy is a _____ source of energy:
A. non-renewable
B. stable
C. renewable
D. none of the above
Propulsion force of a rocket is:
A. non-conservative force
B. conservative force
C. both A and B
D. none of these
