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____________________?
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___________________?
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 _____________________?
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____________________?
Slope of work time graph is equal to____________________?
A. displacement
B. acceleration
C. power
D. energy
The relation between horse power and watt is_________________?
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
An elevator weighing 3.5 x 10-6 N is raised to a height of 1000 m in the absence of friction, the work done is_________________?
An elevator weighing 3.5 x 10-6 N is raised to a height of 1000 m in the absence of friction, the work done is_________________?
A. 3.5 x 103 J
B. 3.5 x 104 J
C. 3.5 x 106 J
D. 3.5 x 109 J
Which of the following types of force can do no work on the particle on which it acts ?
Which of the following types of force can do no work on the particle on which it acts ?
A. frictional force
B. gravitational force
C. elastic force
D. centripetal force
A field in which the work done in a moving a body along closed path is zero is called________________?
A field in which the work done in a moving a body along closed path is zero is called________________?
A. electric field
B. conservative field
C. electromagnetic field
D. gravitational field
Work done will be maximum if the angle between the force F and displacement d is______________________?
Work done will be maximum if the angle between the force F and displacement d is______________________?
A. 45°
B. 90°
C. 180°
D. 0°