In special theory of relativity, the law of conservation of energy and law of conservation of mass have been replaced with
Correct answer: B. Law of conservation of mass-energy
- A. The law of conservation of mass only
- B. Law of conservation of mass-energy
- C. law of conservation of energy only
- D. All of the above
Explanation
In the special theory of relativity, Albert Einstein showed that mass (m) and energy (E) are equivalent and can be converted into each other, as expressed by the famous equation:E = mc^2This means that the laws of conservation of energy and conservation of mass are no longer separate, but are combined into a single law: the law of conservation of mass-energy. This law states that the total mass-energy of a closed system remains constant over time.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Dawn of Modern Physics
Classical physics cannot explain blackbody radiation and related observations, leading to Planck’s quantum theory, in which energy is emitted or absorbed in discrete packets. Photons provide the particle model of light, with energy and momentum linked to frequency and wavelength, including the photoelectric effect and its threshold frequency.
Practise Dawn of Modern Physics
739 free Dawn of Modern Physics MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Dawn of Modern Physics questions
In photodiode, the bias voltage is applied in bias form:
If frequency of light is greater than threshold frequency, then in photoelectric effect the number of electrons increases with an increase in _ of light :
In Compton effect, a photon of a certain wavelength collides with a stationary electron. The wavelength of the emitted photon is:
The Compton's effect is the phenomenon that describes
Which of the following has the largest energy?
According to the wave-particle duality, identify respectively how all micro-particles (electrons, protons, atoms, etc) behave when propagating and when exchanging energies