Dual Nature of Radiation and Matter PYQs - Last 5 Years
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Practice 19 NEET Physics questions from Dual Nature of Radiation and Matter. Use the year-wise and type-wise breakdown to prioritize recent PYQs, then continue into the question list below.
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Last 5 Years Dual Nature of Radiation and Matter Questions
Showing 19 of 19 filtered questions.
1Dual Nature Of Radiation And Matter
A beam of light falls on a metal surface such that photo-electrons are generated. If power of the light source starts to decrease linearly with time $t$, then variation of the photocurrent $I$ and magnitude of the stopping potential $|V|$ w...
MCQ+4 / -12026
2Dual Nature Of Radiation And Matter
A ray of light with wavelength $\lambda$ is incident on three different photoelectric cells namely 1,2 and 3 . The threshold wavelength of these photoelectric cells are $\lambda_1, \lambda_2$, and $\lambda_3$, respectively and the magnitude...
MCQ+4 / -12026
3Dual Nature Of Radiation And Matter
A photon and an electron, each of 20 eV energy, move in free space. The ratio of linear momentum of electron $\mathrm{p}_{\mathrm{e}}$ to that of photon $\mathrm{p}_{\mathrm{Ph}}, \frac{\mathrm{p}_{\mathrm{e}}}{\mathrm{p}_{\mathrm{Ph}}}$ is...
MCQ+4 / -12026
4Dual Nature Of Radiation And Matter
For a metal of work function 6.6 eV , which of the following wavelengths of incident radiation does not give rise to the photoelectric effect?
(Take Planck's constant as $6.6 \times 10^{-34} \mathrm{~J} \mathrm{~s}$ )
(Take Planck's constant as $6.6 \times 10^{-34} \mathrm{~J} \mathrm{~s}$ )
MCQ+4 / -12026
5Dual Nature Of Radiation And Matter
\(\text { Match List I with List II. }\)
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MCQ+4 / -12026
6Dual Nature Of Radiation And Matter
Which of the following options represent the variation of photoelectric current with property of light shown on the x-axis?
MCQ+4 / -12025
7Dual Nature Of Radiation And Matter
De-Broglie wavelength of an electron orbiting in the $n=2$ state of hydrogen atom is close to
(Given Bohr radius $=0.052 \mathrm{~nm}$ )
(Given Bohr radius $=0.052 \mathrm{~nm}$ )
MCQ+4 / -12025
8Dual Nature Of Radiation And Matter
A photon and an electron (mass $m$ ) have the same energy $E$. The ratio ( $\lambda_{\text {photon }} / \lambda_{\text {electron }}$ ) of their de Broglie wavelengths is: ( $c$ is the speed of light)
MCQ+4 / -12025
9Dual Nature Of Radiation And Matter
If \(\phi\) is the work function of photosensitive material in \(\mathrm{eV}\) and light of wavelength of numerical value \(\lambda=\frac{h c}{e}\) metre, is incident on it with energy above its threshold value at an instant then the maximu...
MCQ+4 / -12024
10Dual Nature Of Radiation And Matter
An electron and an alpha particle are accelerated by the same potential difference. Let \(\lambda_e\) and \(\lambda_\alpha\) denote the de-Broglie wavelengths of the electron and the alpha particle, respectively, then:
MCQ+4 / -12024
11Dual Nature Of Radiation And Matter
The graph which shows the variation of \(\left(\frac{1}{\lambda^2}\right)\) and its kinetic energy, \(E\) is (where \(\lambda\) is de Broglie wavelength of a free particle):
MCQ+4 / -12024
12Dual Nature Of Radiation And Matter
If \(c\) is the velocity of light in free space, the correct statements about photon among the following are:
A. The energy of a photon is \(E=h v\).
B. The velocity of a photon is \(c\).
C. The momentum of a photon, \(p=\frac{h v}{c}\).
D....
A. The energy of a photon is \(E=h v\).
B. The velocity of a photon is \(c\).
C. The momentum of a photon, \(p=\frac{h v}{c}\).
D....
MCQ+4 / -12024
13Dual Nature Of Radiation And Matter
The maximum kinetic energy of the emitted photoelectrons in photoelectric effect is independent of:
MCQ+4 / -12023
14Dual Nature Of Radiation And Matter
The de Broglie wavelength associated with an electron, accelerated by a potential difference of 81 V is given by:
MCQ+4 / -12023
15Dual Nature Of Radiation And Matter
The minimum wavelength of \(X\)-rays produced by an electron accelerated through a potential difference of \(V\) volts is proportional to :
MCQ+4 / -12023
16Dual Nature Of Radiation And Matter
The work functions of Caesium \((\mathrm{Cs})\), potassium \((\mathrm{K})\) and Sodium (Na) are \(2.14 ~\mathrm{eV}, 2.30 ~\mathrm{eV}\) and \(2.75 ~\mathrm{eV}\) respectively. If incident electromagnetic radiation has an incident energy of...
MCQ+4 / -12023
17Dual Nature Of Radiation And Matter
The threshold frequency of a photoelectric metal is v0. If light of frequency 4v0 is incident on this metal, then the maximum kinetic energy of emitted electrons will be :
MCQ+4 / -12022
18Dual Nature Of Radiation And Matter
The light rays having photons of energy 4.2 eV are falling on a metal surface having a work function of 2.2 eV. The stopping potential of the surface is
MCQ+4 / -12022
19Dual Nature Of Radiation And Matter
When two monochromatic lights of frequency, v and \({v \over 2}\) are incident on a photoelectric metal, their stopping potential becomes \({{{V_s}} \over 2}\) and Vs respectively. The threshold frequency for this metal is
MCQ+4 / -12022