The maximum displacement of a particle executing S.H.M. corresponds to Maximum kinetic energy and maximum potential energy Zero potential energy and maximum kinetic energy Minimum kinetic energy and minimum potential energy Zero kinetic energy and maximum potential energy TRUE ANSWER : ? YOUR ANSWER : ?
The centre of gravity of a plane lamina will not be at its geometrical centre if it is a Circle Equilateral triangle Right angled triangle Rectangle TRUE ANSWER : ? YOUR ANSWER : ?
If the resultant of two forces ‘P’ and ‘Q’ acting at an angle ‘θ’ makes an angle ‘α’ with ‘P’, then tan α equals P sin θ/P + Q tan θ Q sin θ/P + Q sin θ Q sin θ/P + Q cos θ P sin θ/P - Q cos θ TRUE ANSWER : ? YOUR ANSWER : ?
For the given values of initial velocity of projection and angle of inclination of the plane, the maximum range for a projectile projected upwards will be obtained, if the angle of projection is α = β/2 - π/2 α = π/4 - β/2 α = π/2 + β/2 α = π/4 - β/2 TRUE ANSWER : ? YOUR ANSWER : ?
If g1 and g2 are the gravitational accelerations on two mountains A and B respectively, the weight of a body when transported from A to B will be multiplied by g1 g2/g1 g2 g1/g2 TRUE ANSWER : ? YOUR ANSWER : ?
It is observed that in a certain sinusoidal oscillation, the amplitude is linearly dependent on the frequency f. If the maximum velocity during the oscillation is V, then V must be proportional to f 1/f f² 1/f² TRUE ANSWER : ? YOUR ANSWER : ?
Newton's law of Collision of elastic bodies states that when two moving bodies collide each other, their velocity of separation Is inversely proportional to their velocity of approach Bears a constant ratio to their velocity of approach Is equal to the sum of their velocities of approach Is directly proportional to their velocity of approach TRUE ANSWER : ? YOUR ANSWER : ?
If two forces acting at a point are in equilibrium, they must be equal in magnitude and their line of action must be along The same line in the same sense The same line in opposite sense None of these The perpendicular to both the lines TRUE ANSWER : ? YOUR ANSWER : ?
The velocity ratio of an inclined plane of inclination ‘θ’ with horizontal for lifting a load is cosec θ cos θ tan θ sin θ TRUE ANSWER : ? YOUR ANSWER : ?
The dimensions of centrifugal force are M1 L2 T2 M’L’T2 M’L’T1 M’L-‘T2 TRUE ANSWER : ? YOUR ANSWER : ?