Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 11-science Answered

<div>Basically what are the points we need to remember in Planck's Quantum theory?</div>
Asked by Kalita Padmanath | 27 Jun, 2016, 01:48: PM
Expert Answer
Max Plank in 1901 , gave a new revolutionary theory known as Quantum theory of radiation.
 
Main features of this theory are :
1. Radiant energy is not emitted or absorbed continuously but discontinuously in the form of small packets of energy called Quanta.
Each quanta is associated with a definite amount of energy.
2. E is directly proportional to frequency of light,         
E=hv   where h is known as planks constant.  h= 6.63x10-34 Js       
3.  The total amount of energy emitted or absorbed by the body will be some whole no. multiple of quantum,
i.e,  E=nhv , where n is an integer such as 1, 2, 3, ....
Since, the frequency ν, wavelength λ, and speed of light c are related by λν = c, the Planck relation for a photon can also be expressed as  
E space equals space fraction numerator h c over denominator lambda end fraction
The above equation leads to another relationship involving the Planck constant.
Answered by Prachi Sawant | 27 Jun, 2016, 04:25: PM

Concept Videos

Multiple Choice Questions Practice Test Subjective Questions Webinar Subjective Questions Pre Board Assessment
Answered Unanswered My Questions My Answers
CBSE 11-science - Chemistry
calculate the number of emitted per by a bulb 60 watt the wavelength of bulb 2000A
Asked by habibakhatoon112 | 15 Jul, 2022, 09:14: PM
ANSWERED BY EXPERT
CBSE 11-science - Chemistry
what is science
Asked by akankhyapradhan123 | 22 Oct, 2021, 07:29: PM
ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Why ionisation energy is always positive
Asked by kusumghosh71 | 21 Aug, 2021, 10:59: AM
ANSWERED BY EXPERT
CBSE 11-science - Chemistry
chemistry atomicstructure
Asked by muramshettyaashrith218 | 16 Sep, 2020, 09:58: PM
ANSWERED BY EXPERT
CBSE 11-science - Chemistry
The wavelength of a spectral line for an electronic transition is inversely proportional to : (1) number of electrons undergoing transition (2) the nuclear charge of the atom (3) the velocity of an electron undergoing transition (4) the difference in the energy involved in the transition
Asked by nandanappillai | 21 May, 2020, 01:08: PM
ANSWERED BY EXPERT
CBSE 11-science - Chemistry
a photon of 3000 Angstrom is absorbed by a gas and then re-elected as two photons. One photon is red 7600  Angstrom  .  What wavelength of other photon?  Here I am knowing solution but I am not able to understand that why we are using formula ( h*c/lambda of total =  h*c/lambda of 1 +h*c / lambda of 2 ) Please solve it 
Asked by rajarage18 | 23 Jan, 2020, 08:00: PM
ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Formula of energy
Asked by kuldeepsingh33087 | 27 Jul, 2019, 11:35: AM
ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Solved numerical s on Plank quantum theory?  
Asked by vijaykumartecno348 | 06 Jul, 2019, 09:26: PM
ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Light of wavelength 1281.8nm is emitted when an electron of hydrogen atom drops from 5th to 3rd energy level calculate the wavelength of the photon emitted when electron falls from 3rd to ground level. 
Asked by Taniyarana150 | 23 May, 2019, 12:01: AM
ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Hi 
Asked by jain.pradeep | 02 May, 2019, 11:52: PM
ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt