## Common queries related to theory of relativity-1

Q1. Who proposed the theory of relativity?
Ans: Albert Einstein.

Q2. What is the difference between general theory of relativity and special theory of relativity?
Ans: General Theory of relativity: This theory deals with the the accelerated objects.
Special theory of relativity: This theory of relativity deals with the non-accelerated objects.
Out of the above two, the special theory of relativity is easier to understand because it deals with the non-accelerated objects. Continue reading “Common queries related to theory of relativity-1”

## Applications of the Heisenberg Uncertainty Principle: The Radius of Bohr’s First Orbit

In one of my earlier articles, I have discussed the one the applications of the Heisenberg uncertainty principle that is non-existence of electron in the nucleus. Let us discuss today the one more application of the Heisenberg uncertainty principle that is the determination of the radius of the Bohr’s first orbit. Let us start:

If ∆x and ∆px are the uncertainties in the simultaneous measurements of position and momentum of the electron in the first orbit, then from uncertainty principle

∆x∆px = Ћ

Where Ћ = h/2∏

Or    ∆px = Ћ /∆x                                                                 (1)

As kinetic energy is given as

K = p2/2m

Then uncertainty in K.E is

∆K =∆p2x/2m

Put equation (i) in above equation

∆K= Ћ2 /2m(∆x)2 (2)

As potential energy is given by

∆V= -1/4∏ε0 Ze2/∆x                                                      (3)

The uncertainty in total energy is given by adding equations (2) and (3), that is Continue reading “Applications of the Heisenberg Uncertainty Principle: The Radius of Bohr’s First Orbit”

## DAV institute of Engineering & Technology Jalandhar

DAV institute of Engineering & Technology is situated in the district Jalandhar (Punjab) of India.

Affiliated with: Punjab Technical University (PTU), Kapurthala

Approved by: All India Council for Technical Education (AICTE), New Delhi.

Courses offered:

B.Tech.

• Computer Science Engineering
• Electronics and Communication Engineering
• Civil Engineering
• Mechanical Engineering
• Information Technology
• Electrical and Electronics Engineering

10+2 Non-Medical (PCM) passed.

Total seats are classified in 2 categories. Institute can fill 33% of the seats (Management Quota) directly provided the students possess requisite qualification. Balance (67%) seats are filled through counseling conducted by PTU on the basis of ranking in All India Engineering Entrance Exam (AIEEE).

Other courses:

M.Tech, MCA, MBA, DOEACC courses

Website: http://www.davietjal.org

Email : daviet@davietjal.org