The uncertainty in momentum and position is due to its:
Correct answer: A. Property of matter and radiation
- A. Property of matter and radiation
- B. Two dimensional motion
- C. Extreme velocities
- D. Small size
Explanation
In order to find the position and momentum of matter, we need to observe these metrics. In order to observe them, we need to have radiation reflect off of the matter after interacting with it. Hence to precisely know the measurements, we first must precisely know the nature of the radiation (wavelength and energy). However, in order to know the nature of radiation, we need it to interact with matter. Thus this juxtaposition stemming from the inherent nature of matter and radiation gives rise to the uncertainty principle.
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
The charge of a photon is:
If the time interval between the occurrence of two events is measured in a frame with no relative motion in which two events occur. Then the time measured by the observer in a frame moving with relative velocity v is _.
An electron moving with velocity v has momentum 3 x 10 -26 Kg.m/s. The de Broglie wavelength associated with it is _. Value of h = 6.63 x 10^-34 is.
Which group consists of only electromagnetic waves?
White light gives spectrum after undergoing:
Photocell is similar to: