PART - 1 CH - 4 Laws of Motion — Physics STD 11 Science — Question

The reciprocal of the Bulk modulus of elasticity is called compressibility coefficient or contraction modulus.

Read statement below carefully and state with reasons and examples, if it is true or false; A particle in one-dimensional motion. With zero speed may have non-zero velocity.

The moment of inertia (I) of a particle of a body about a given axis of rotation is equal to the product of the mass (m) of that particle and the perpendicular distance of the particle from the axis of rotation.

If the area is less, the pressure is less and if the area is more the pressure is more.

Read each statement below carefully and state, with reasons and examples, if it is true or false:A scalar quantity is one that
Has the same value for observers with different orientations of axes.

Water is flowing in a horizontal pipe of un equal area of cross-section. At a narrow place in the pipe the velocity will be higher and the pressure will he lower.

According to the law of energy equilization, the average energy of a molecule of a diatomic gas is 5/2 KT.

I = 2 E_r

State if the following statements is true or false. Give reasons for your answer: Total energy of a system is always conserved, no matter what internal and external forces on the body are present.