Planck’s Constant -Multiple Choice Questions Quiz

Interactive MCQs on “Planck’s Constant”:

Solve the following 10 questions. Only one option is correct. Click on the “Submit” button when done. Click on the “embed” button to use this quiz on your website. Click on “WhatsApp” to share this quiz.

Question 1: What is Planck's constant denoted by?

(a) h
(b) c
(c) G
(d) k

Question 2: What is the value of Planck's constant approximately?

(a) 6.63 x 10^-34 J·s
(b) 9.81 m/s²
(c) 3.00 x 10^8 m/s
(d) 1.38 x 10^-23 J/K

Question 3: Who introduced the concept of Planck's constant in quantum theory?

(a) Albert Einstein
(b) Max Planck
(c) Niels Bohr
(d) Werner Heisenberg

Question 4: What is the role of Planck's constant in the quantum theory of light?

(a) It relates the energy of a photon to its frequency.
(b) It determines the speed of light in a vacuum.
(c) It quantizes the energy levels of atoms.
(d) It governs the behavior of electrons in an atom.

Question 5: In which year was Planck's constant first introduced?

(a) 1905
(b) 1911
(c) 1899
(d) 1927

Question 6: Which unit is Planck's constant typically expressed in?

(a) J/s
(b) N·m
(c) W/Hz
(d) kg·m²/s

Question 7: Planck's constant is essential for understanding the behavior of particles at which scale?

(a) Atomic scale
(b) Planetary scale
(c) Stellar scale
(d) Galactic scale

Question 8: Which principle in quantum mechanics states that certain physical quantities are quantized and can only have discrete values?

(a) Heisenberg Uncertainty Principle
(b) Pauli Exclusion Principle
(c) Planck's Principle
(d) Quantization Principle

Question 9: Planck's constant is fundamental in determining the uncertainty in which physical properties of particles?

(a) Mass and velocity
(b) Position and momentum
(c) Charge and spin
(d) Temperature and pressure

Question 10: Planck's constant is related to the wavelength of a particle or a photon through which equation?

(a) λ = h/mv
(b) λ = hc/E
(c) λ = h/p
(d) λ = hν