Embibe Experts Solutions for Chapter: Physical World, Exercise 1: Exercise

Which of the following phenomenon is not studied under macroscopic domain of physics?

Consider the following statements about the four fundamental forces in nature.
(i) The strong nuclear force binds protons and neutrons in a nucleus.
(ii) The strong nuclear force is about ${10}^3$ times the electromagnetic force in strength.
(iii) The weak nuclear force is the weakest of all the four fundamental forces.
(iv) The range of the weak nuclear is about ${10}^{-16} \mathrm{m}$
The correct statement(s) is (are)

Which one of the following forces is the strongest fundamental force in nature? 

Force of friction and tension in a string are

The fundamental force behind the frictional force is

The field particle of the nuclear forces are:

A vertically projected body has its energy

"Energy can neither be created nor be destroyed, but it can be transformed from one form to another", this law is known as