PART - 2 CH - 8 Mechanical Properties of Solids — Physics STD 11 Science — Question

The wheels of moving vehicles are made hollow in the middle and thick on the circumference, why?

The sign of work done by a force on a body is important to understand. State carefully if the following quantities are positive or negative: Work done by gravitational force in the above case.

What is the principle of homogeneity of dimensions?

The length covered by a body is found to be directly proportional to the square of time. What is the nature of acceleration?

What is the source of the kinetic energy of the falling rain drop?

On an average, a human heart is found to beat 75 times in a minute. Calculate its frequency and period.

Name two physical quantities whose dimensions are same.

A glass of water has an ice cube floating in water. The water level just touches the rim of the glass. will the water overflow when the ice melts?

Do specific heat and latent heat have the same dimensions?

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?