PART - 2 CH - 11 Thermodynamics — Physics STD 11 Science — Question

Suppose a charged particle moves with a velocity v near a wire carrying an electric current. A magnetic force, therefore, acts on it. If the same particle is seen from a frame moving with velocity v in the same direction, the charge will be found at rest. Will the magnetic force become zero in this frame? Will the magnetic field become zero in this frame?

What is the gravitational potential at infinity?

A rectangular brick is kept on a table with a part of its length projecting out. It remains at rest if the length projected is slightly less than half the total length but it falls down if the length projected is slightly more than half the total length. Give reason.

An object is placed far away from all the objects that can exert force on it. A frame of reference is constructed by taking the origin and axes fixed in this object. Will the frame be necessarily inertial?

What is the angle between frictional force and instantaneous velocity of the body moving on a rough road?

Centre of mass of a triangular lamina is at the point of intersection of the is _______.

Why is it not necessary for a body following another body, to stop to avoid collision?

Which is the most accurate watch?

Write the formula for compressibility of an ideal gas.