PART - 1 CH - 5Work, Energy and Power — Physics STD 11 Science — Question

While performing simple harmonic motion, the ratio of kinetic energy at the mean position of the pendulum and potential energy at the maximum displacement is equal to 1.

The square root of the ratio of the moment of inertia (I) of an object relative to a rotation axis and the total mass (M) of the object is called the radius of rotation relative to that rotation axis.

Read each statement below carefully and state, with reasons, if it is true or false: The net acceleration of a particle in circular motion is always along the radius of the circle towards the centre.

For a body starting a constant accelerated motion from a stationary state, the graph between distance and time will be parabolic.

The motion of an arrow released from a bow is on a parabolic path.

The temperature at which all three states of matter are in equilibrium is called triple point

The pressure on the moon is zero, hence the boiling point decreases and water start boiling.(True/False)

The value of g on the moon is greater than on the earth's surface.(True/False)

The body revolving around a planet is called satellite and the body revolving around a star is called planet.(True/False)

Young's Modulus of elasticity can be calculated only for solid materials.