The relativistic length of a moving object will be
Correct answer: B. Decreased
- A. Remain same
- B. Decreased
- C. Increased
- D. Doubled
Explanation
The relativistic length of a moving object will be decreased, as seen by an observer moving relative to the object. This is a consequence of the special theory of relativity, which states that the length of an object is contracted along the direction of motion when it is moving at relativistic speeds.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
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.
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 Quantum Theory and Radiation questions
If the source of light is moving toward the observer, then the speed of light received by the observer will be:
An inertial frame of reference is one which satisfies:
The energy of the used light is high, then the momentum of the investigated particle has:
If the rest mass of a particle is zero, then its speed is:
Blackbody radiation depends upon
If the temperature of the black body is doubled then the emitted energy from it will be increased: