According to Einstein, mass and energy are:
Correct answer: B. Directly proportional
- A. Inversely proportional
- B. Directly proportional
- C. Equal to each other
- D. None of these options is correct
Explanation
Option A) Inversely proportional is not correct because the relationship between mass and energy is a direct proportion, as described by the equation E=mc².Option B) Einstein's equation, E = mc2, shows that mass and energy are interchangeable and are directly related. It states that mass is concentrated energy.Option C) Equal to each other is not correct because mass and energy are not equal in value, but rather are related by a proportionality constant (the speed of light squared).Option D) None of these options is correct is not correct because the correct answer is B) Directly proportional.
Last updated
About Quantum Theory and Radiation
Quantum theory treats electromagnetic radiation as packets of energy called photons, with energy proportional to frequency through E equals hf. The topic covers Planck's hypothesis, photon momentum, the photoelectric effect, threshold frequency, work function and wave particle duality, distinguishing quantised energy exchange from classical continuous radiation.
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.
Exams that ask Physics questions like this
Physics is on 13 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
0.001 kg mass will be equivalent to_________________?
A black body emitting all the radiation in the visible region appears________.
A black body has the property to _____________ all the radiation entering it.
A black body is one that
A blacksmith is heating an iron axe on a high degree burner. While heating the axe, he noted that different colours are produced. Which of the following colours shows the highest temperature of the iron axe?