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CBSE - XII Science - Physics - Dual Nature of Radiation and Matter
potential difference v is applied across x-ray tube IF e/m is the charge to mass ratio of an e & c is the speed of ligh in vacum the ratio of the de broghlie wavelength of incident electrons to the shortest wavelength of x-rays produced is given by
Asked by phani8919movva
5th July 2022,
8:09 PM
CBSE - XII Science - Physics - Dual Nature of Radiation and Matter
what is the princple of working laser light?
Asked by mazhartahsildar143
7th May 2020,
1:44 PM
CBSE - XII Science - Physics - Dual Nature of Radiation and Matter
The threshold wavelength of a photosensitive metal is 275nm.calculate the maximum velocity of the photoelectron ejected when light of 180nm is incident on it. How to solve this??
Asked by Hemanthrakshitha95
3rd March 2020,
2:55 PM
CBSE - XII Science - Physics - Dual Nature of Radiation and Matter
In the wave picture of light, intensity of light is determined by square of the amplitude of wave. What determines the intensity of light in the photon picture of light?
Asked by rohitraman1115
8th January 2019,
4:33 PM
CBSE - XII Science - Physics - Dual Nature of Radiation and Matter
Pl give sol.as per pic attached
Asked by sudheerkapoor67
18th January 2018,
4:08 PM
CBSE - XII Science - Physics - Dual Nature of Radiation and Matter
a proton and alpha particle is accelerated through the same potential which one of the two has
1) greater value of de-Broglie wavelength associated with it?
2) less kinetic energy?
Asked by modi72879
25th November 2017,
11:29 AM
CBSE - XII Science - Physics - Dual Nature of Radiation and Matter
From boards point of view is photocell an important topic?
Asked by vasturushi
26th October 2017,
1:11 PM
CBSE - XII Science - Physics - Dual Nature of Radiation and Matter
Please give a detailed answer to this question .
Asked by Varsneya Srinivas
25th October 2017,
8:51 PM
CBSE - XII Science - Physics - Dual Nature of Radiation and Matter
hello
in this chapter every scientist say that electron escape if radiation fall into any metal surface
but did you tell me why electron wrere not escape in the case of solar cells
means in solar cells electron absord energy ans they create electricity
but in photoelectric effects its say its has some work function to esape throught surface
overall tell me the most uniqe difference in solar cell and photoelectric effects
and one common thing in both
Asked by saggugurupal
4th November 2016,
2:43 PM
CBSE - XII Science - Physics - Dual Nature of Radiation and Matter
Why is it easier to remove an electron from sodium than from copper. Which metal has higher value of threshold frequency?
Asked by tripathi.durba
23rd February 2016,
11:22 PM
CBSE - XII Science - Physics - Dual Nature of Radiation and Matter
Determine the value of the de brogile wavelength associated with the electron orbiting in the ground state of hydrogen atom (Given En = - (13.6/n square ) eV and Bohr radius R 0 =0.53 A degree) How will the de Brogile wavelength change when it is in the first excited state?
Asked by divyachhibber21
11th February 2016,
8:15 PM
CBSE - XII Science - Physics - Dual Nature of Radiation and Matter
A monochromatic source , emitting light of wavelength , 600 nm , has a power output of 66 W. Calculate the number of photons emitted by this source in 2 minutes.
Asked by vinitapahel123
13th December 2015,
12:04 PM
CBSE - XII Science - Physics - Dual Nature of Radiation and Matter
. then how could this question be incorrect?
. then how could this question be incorrect?
Asked by Somnath Pal
14th November 2015,
11:27 PM
CBSE - XII Science - Physics - Dual Nature of Radiation and Matter
The apparatus shown in figure consists of four glass columns connected by horizontal sections.The heights of two central columns B and C are 49 cm each. The two outer column A and D are open to atmosphere. A and C are maintained a a temperature of 95 degree C, while column B and D are maintained at 5 degree C. The heights of liquid in A and D measured from base line are 52.8 cm and 51 cm respectively. Determine the coefficient of thermal expansion of the liquid.
Asked by Sourav
1st May 2015,
5:29 PM
CBSE - XII Science - Physics - Dual Nature of Radiation and Matter
the temperature of ice is -10 degree celius and thet of water 60 degree celsius. they are mixed in equal amounts . what part of the ice will be melted?
the temperature of ice is -10 degree celius and thet of water 60 degree celsius. they are mixed in equal amounts . what part of the ice will be melted?
Asked by kvunni hj
27th March 2015,
6:37 PM
CBSE - XII Science - Physics - Dual Nature of Radiation and Matter
get de-broglie wavelength of thermal neutron at 27celcius
Asked by Ashok Rana
8th March 2015,
9:00 AM
CBSE - XII Science - Physics - Dual Nature of Radiation and Matter
an electron & photon have same wavelength.which has greater kinetic energy?
Asked by Ashok Rana
8th March 2015,
8:57 AM
CBSE - XII Science - Physics - Dual Nature of Radiation and Matter
State de-Broglie hypothesis.
Asked by Topperlearning User
8th July 2014,
5:30 PM
CBSE - XII Science - Physics - Dual Nature of Radiation and Matter
Show graphically, the variation of the de-Broglie wavelength () with the potential (V) through which an electron is acceleration from rest.
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Physics - Dual Nature of Radiation and Matter
An electron is accelerated through a potential difference of 100 volts. What is the de-Broglie wavelength associated with it? To which part of the electromagnetic spectrum does this value of wavelength correspond?
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Physics - Dual Nature of Radiation and Matter
An electron and alpha particle have the same de-Broglie wavelength associated with them. How are their kinetic energies related to each other?
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Physics - Dual Nature of Radiation and Matter
With what purpose was famous Davisson-Germer experiment with electrons performed.
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Physics - Dual Nature of Radiation and Matter
Show graphically, the variation of the de-Broglie wavelength with the potential (V) through which an accelerated from rest.
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Physics - Dual Nature of Radiation and Matter
Show that de Broglie hypothesis of matter waves is in agreement with Bohr's theory.
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Physics - Dual Nature of Radiation and Matter
How do matter waves differ from a light wave as regards the velocity of the particle and the wave?
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Physics - Dual Nature of Radiation and Matter
Is a moving particle equivalent to a single wave?
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Physics - Dual Nature of Radiation and Matter
Are matter waves electromagnetic in nature?
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Physics - Dual Nature of Radiation and Matter
An electron, an alpha particle and a proton have the same kinetic energy. Which one of these particles has the largest de-Broglie wavelength?
Asked by Topperlearning User
21st May 2014,
12:53 PM
CBSE - XII Science - Physics - Dual Nature of Radiation and Matter
An electron and a photon each have a wavelength 1.00 nm. Find (i)their momenta. (ii)the energy of the photon and (iii)the kinetic energy of electron.
Asked by Topperlearning User
21st May 2014,
12:48 PM
CBSE - XII Science - Physics - Dual Nature of Radiation and Matter
An electron is accelerated through a potential difference of 100 volts. What is the de- Broglie wavelength associated with it? To which part of the electromagnetic spectrum does this value of wavelength correspond?
Asked by Topperlearning User
21st May 2014,
12:23 PM
CBSE - XII Science - Physics - Dual Nature of Radiation and Matter
The de Broglie wavelengths, associated with a proton and a neutron, are found to be equal. Which of the two has a higher value for kinetic energy ?
Asked by Topperlearning User
21st May 2014,
12:14 PM
CBSE - XII Science - Physics - Dual Nature of Radiation and Matter
An electromagnetic wave of wavelength is incident on a photosensitive surface of negligible work function. If the photo-electrons emitted from this surface have the deBroglie wavelength , prove that
Asked by Topperlearning User
21st May 2014,
10:35 AM
CBSE - XII Science - Physics - Dual Nature of Radiation and Matter
The wavelength of a photon is 1.4.It collides with an electron . The wavelength of photon after the collision is 2.Calculate the energy of scattered electron.
Asked by Topperlearning User
21st May 2014,
10:31 AM
CBSE - XII Science - Physics - Dual Nature of Radiation and Matter
Is the de Broglie wavelength of a photon of an electromagnetic radiation equal to wavelength of a radiation?
Asked by Topperlearning User
21st May 2014,
9:49 AM
CBSE - XII Science - Physics - Dual Nature of Radiation and Matter
What is the nature of matter waves?
Asked by Topperlearning User
21st May 2014,
9:41 AM
CBSE - XII Science - Physics - Dual Nature of Radiation and Matter
How would you prove the dual nature of matter?
Asked by Topperlearning User
21st May 2014,
9:18 AM
CBSE - XII Science - Physics - Dual Nature of Radiation and Matter
Why is the wave nature of particle not observable in daily life?
Asked by Topperlearning User
19th May 2014,
4:38 PM
