Max Planck introduced the quantum theory in 1900 to explain radiation emission and absorption. According to this theory, energy is not continuous but exists in discrete units called quanta. Each quantum, like a photon in light, carries a specific amount of energy proportional to the frequency of the radiation. Planck's constant 'h' plays a crucial role in this theory, defining the relationship between energy and frequency of a photon. The theory revolutionized the understanding of energy transfer in the form of wave packets, setting the foundation for modern quantum mechanics.
What year did Max Planck propose the quantum theory?
Max Planck proposed the quantum theory in 1900.
According to Planck's quantum theory, how does energy travel?
According to Planck's quantum theory, energy travels in a discontinuous manner and is composed of tiny discrete units called quanta.
What is the main concept of Planck's quantum theory regarding energy emission and absorption?
The main concept of Planck's quantum theory is that energy is emitted or absorbed in a discontinuous manner and in the form of wave packets.
What is the relationship between energy and frequency in Planck's quantum theory?
In Planck's quantum theory, the amount of energy associated with a quantum of radiation is proportional to the frequency of the radiation.
What is the significance of Planck's constant in his quantum theory?
Planck's constant 'h' is a constant value (6.626 x 10-34 Js) that represents the ratio of energy and the frequency of a photon in his quantum theory.
What did Max Planck propose in 1900 to explain the emission and absorption of radiation?
a) Energy levels in atoms
b) Continuous energy emission
c) Quantum theory
d) Wave-particle duality
Answer: c) Quantum theory
According to Planck's theory, how is energy emitted or absorbed?
a) Continuously
b) In wave packets
c) In large quantities
d) Without any pattern
Answer: b) In wave packets
What is each wave packet or quantum associated with according to Planck's theory?
a) Variable energy
b) Random frequency
c) Definite amount of energy
d) Changing wavelength
Answer: c) Definite amount of energy
In Planck's quantum theory, what is the energy associated with a quantum of radiation proportional to?
a) Wavelength
b) Amplitude
c) Frequency
d) Velocity
Answer: c) Frequency
What is the quantum of energy often called in the case of light according to Planck's theory?
a) Proton
b) Electron
c) Photon
d) Neutron
Answer: c) Photon