Which of the following scientists formulated the 'Uncertainty Principle', stating that exact position and momentum of an electron cannot be simultaneously known? MCQ with Answer and Explanation

Question Report Error

Which of the following scientists formulated the 'Uncertainty Principle', stating that exact position and momentum of an electron cannot be simultaneously known?

A. Erwin Schrodinger

B. Niels Bohr

C. Max Planck

D. Werner Heisenberg

Answer: Option D

Solution (By JKExamLibrary)

Werner Heisenberg, a German theoretical physicist, published his famous Uncertainty Principle in 1927. The principle dictates a fundamental limit to precision at the quantum level: the more precisely the position of a particle (like an electron) is determined, the less precisely its momentum can be known, and vice versa. Mathematically, delta_x * delta_p >= h/(4pi).

This question belongs to: Science Physics

Discuss this Question (0)

No comments yet. Be the first to start the discussion!

Practice More Physics Questions

Question #1 Report Error

The frequency of ultrasonic wave is

A. > 20 MHz

B. > 20 kHz

C. < 20 Hz

D. 20 Hz - 20 kHz

View Answer & Solution Discuss

Correct Answer: Option B

Explanation:
Above 20 kHz.

This question belongs to: Science Physics

Question #2 Report Error

At the magnetic poles of the Earth, the angle of dip (inclination) is exactly:

A. 180 degrees

B. 90 degrees

C. 45 degrees

D. 0 degrees

View Answer & Solution Discuss

Correct Answer: Option B

Explanation:
The angle of dip is the angle the Earth's total magnetic field vector makes with the horizontal surface. At the magnetic equator, the magnetic field lines are perfectly parallel to the ground (0 degrees). At the magnetic poles, the field lines plunge strictly vertically downward (or upward) into the ground, making a 90-degree angle with the horizontal.

This question belongs to: Science Physics