| Elementary particles are considered as the building blocks of nature. Which of the following statement(s) regarding elementary particles is/are correct? |
| 1. Protons are considered as elementary particles. |
| 2. Gravitational force does not apply to elementary particles. |
| 3. 'Standard Model' of Physics is a complete theory of elementary particles, which includes all fundamental forces. |
| Select the correct answer using the codes given below. |
A) Only 1
B) 1 and 2
C) 2 and 3
D) None of these
Correct Answer: D
Solution :
[d] Elementary particles are those, which are not made up of any further sub-particles. Since, protons are made of smaller sub-particles (called quarks), they are not considered as elementary particles. Gravitational force applies to all particles with mass, including elementary particles. 'Standard Model' of Physics is the most popular theory of particle physics, but it consists of only the strong, weak arc electromagnetic force and excludes the gravitational force.
You need to login to perform this action.
You will be redirected in
3 sec
