PART - 1 CH - 3 Motion in a Plane — Physics STD 11 Science — Question

Give the nature of work for which Prof. Einstein was awarded Nobel Prize in Physics.

A gun bullet produces a clear hole in the glass. Explain.

When we step barefoot into an office with a marble floor, we feel cold. Why?

Give two attributes which remain conserved in strong forces besides momentum and energy.

What is called heat capacity?

Give the magnitude and direction of the net force acting on. A high-speed electron in space far from all material objects, and free of electric and magnetic fields.

A block of ice is floating in a liquid of specific gravity 1.2 contained in the beaker. What will be the effect on the level of liquid in the beaker when the whole ice melts?

“All black surfaces are not good radiators.” Comment.

Water in a capillary tube is 6 cm rise to a height. To what height will water rise in a second capillary tube whose diameter is 2/3 of the first?

What is the relationship between the values of instantaneous velocity and the values of instantaneous speed?