When two protons are brought together_____________________?
(A) Kinetic energy increases
(B) P.E. between them increases
(C) P.E. between them decreases
(D) P.
(D) between tem does not change
The relation between the escape velocity V esc and orbital speed Vo is given by________________?
(A) V esc = 1/2Vo
(B) V esc = -2 Vo
(C) V esc = Vo
(D) V esc = 2Vo
Work has the dimension as that of same as that of__________________?
(A) torque
(B) angular momentum
(C) linear momentum
(D) power
One mega watt hour is equal to_________________?
(A) 36 x 106 J
(B) 36 x 1012 J
(C) 36 x 109 J
(D) 36 x 108 J
When the speed of a moving body is doubled then___________________?
(A) its K.E is doubled
(B) its acceleration is doubled
(C) its P.E is doubled
(D) its momentum is doubled
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
When a force is applied at one end of an elastic wire it produces at strain ∝ in the wire. If y is the youngs modulus of the material of the wire the amount of energy stored per unit volume of the wire is given by_________________?
(A) Y∝
(B) 2Y∝
(C) Y∝/2
(D) Y∝2