Dual Nature of Radiation PYQs - Last 5 Years
KCET / Physics / Modern Physics / 12 recent questions
PhysicsModern Physics2022-2026
Practice 12 KCET Physics questions from Dual Nature of Radiation. 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 Questions
Showing 12 of 12 filtered questions.
1Dual Nature Of Radiation
Work function of the metal is
MCQ+1 / -02026
2Dual Nature Of Radiation
Variation of photoelectric current with anode potential is shown below. Choose the correct option ($V_0$ = stopping potential)
MCQ+1 / -02026
3Dual Nature Of Radiation
The anode voltage of a photocell is kept fixed. The frequency of the light falling on the cathode is gradually increased. Then the correct graph which shows the variation of photo current I with the frequency $v$ of incident light is
MCQ+1 / -02025
4Dual Nature Of Radiation
If we consider an electron and a photon of same de-Broglie wavelength, then they will have same
MCQ+1 / -02025
5Dual Nature Of Radiation
The photoelectric work function for photo metal is 2.4 eV . Among the four wavelengths, the wavelength of light for which photoemission does not take place is
MCQ+1 / -02024
6Dual Nature Of Radiation
Light of energy $E$ falls normally on a metal of work function $\frac{E}{3}$. The kinetic energies $K$ of the photo electrons are
MCQ+1 / -02024
7Dual Nature Of Radiation
The energy gap of an LED is \(2.4 \mathrm{~eV}\). When the LED is switched ON, the momentum of the emitted photons is
MCQ+1 / -02023
8Dual Nature Of Radiation
In an experiment to study photoelectric effect the observed variation of stopping potential with frequency of incident radiation is as shown in the figure. The slope and \(y\)-intercept are respectively
MCQ+1 / -02023
9Dual Nature Of Radiation
A 60 W source emits monochromatic light of wavelength 662.5 nm. The number of photons emitted per second is
MCQ+1 / -02023
10Dual Nature Of Radiation
In a photo electric experiment, if both the intensity and frequency of the incident light are doubled, then the saturation photoelectric current
MCQ+1 / -02022
11Dual Nature Of Radiation
The de-Broglie wavelength of a particle of kinetic energy \(K\) is \(\lambda\), the wavelength of the particle, if its kinetic energy \(\frac{K}{4}\) is
MCQ+1 / -02022
12Dual Nature Of Radiation
The kinetic energy of the photoelectrons increases by \(0.52 \mathrm{~eV}\) when the wavelength of incident light is changed from \(500 \mathrm{~nm}\) to another wavelength which is approximately
MCQ+1 / -02022