According to the postulates of the theory of relativity, a fourth dimension has been added to the three dimensions already associated with a Cartesian frame of reference. Which is the fourth dimension?
Correct answer: D. Time
- A. Space
- B. Inertial frame of reference
- C. Speed of light
- D. Time
Explanation
According to the theory of relativity, specifically Einstein's theory of special relativity, the fourth dimension added to the three dimensions of space is 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
if we consider electrons and photons of the same wavelength, then they will have the same
Power radiated by black body at temperature T1 is P and it radiates maximum energy at a wavelength 11. If the temperature of the black body is changed from T1 to T2, it radiates max energy at a wavelength of 11/2. The power radiated at T2 is
The maximum K.E of emitted photoelectrons depend on
Aging process of the human body is slowed by motion at
When scattered X-ray photons are observed at θ = 90°, the Compton shift Δλ is equal to
A photocell with a constant potential difference of V volts across it illuminated by a point source from a distance of 25 cm. When the source is moved to a distance of 1m, the electrons emitted by the photocell