Dual Nature of Radiation PYQs - Last 10 Years
WB JEE / Physics / Modern Physics / 10 recent questions
PhysicsModern Physics2017-2026
Practice 10 WB JEE 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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2017-2026
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2017-2026
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Last 10 Years Dual Nature of Radiation Questions
Showing 10 of 10 filtered questions.
1Dual Nature Of Radiation
Radiation of wavelength $\lambda$ is incident on a photocell．The fastest emitted electron has speed $v$ . If the wavelength is changed to $\frac{3 \lambda}{4}$ ，then the speed of the fastest emitted electron will be
MCQM+1 / -0.252026
2Dual Nature Of Radiation
$10^{20}$ photons of wavelength 660 nm are emitted per second from a lamp. The wattage of the lamp is (Planck's constant $=6.6 \times 10^{-34} \mathrm{Js}$ )
MCQ+2 / -0.52025
3Dual Nature Of Radiation
The de-Broglie wavelength of a moving bus with speed $v$ is $\lambda$. Some passengers left the bus at a stoppage. Now when the bus moves with twice of its initial speed, its kinetic energy is found to be twice of its initial value. What is...
MCQ+1 / -0.252025
4Dual Nature Of Radiation
An electron in Hydrogen atom jumps from the second Bohr orbit to the ground state and the difference between the energies of the two states is radiated in the form of a photon. This photon strikes a material. If the work function of the mat...
MCQ+1 / -0.252025
5Dual Nature Of Radiation
A beam of light of wavelength \(\lambda\) falls on a metal having work function \(\phi\) placed in a magnetic field B. The most energetic electrons, perpendicular to the field are bent in circular arcs of radius R. If the experiment is perf...
MCQ+1 / -0.252024
6Dual Nature Of Radiation
Monochromatic light of wavelength \(\lambda=4770 \mathop A\limits^o\) is incident separately on the surfaces of four different metals A, B, C and D. The work functions of A, B, C and D are $$4.2 \mathrm{~eV}, 3.7 \mathrm{~eV}, 3.2 \mathrm{...
MCQM+2 / -02024
7Dual Nature Of Radiation
Electric field component of an EM radiation varies with time as E = a (cos\(\omega\)0t + sin\(\omega\)t cos\(\omega\)0t), where a is a constant and \(\omega\) = 1015 s\(-\)1, \(\omega\)0 = 5 \(\times\) 1015 s\(-\)1. This radiation falls on ...
MCQM+2 / -02021
8Dual Nature Of Radiation
A point source of light is used in an experiment of photoelectric effects. If the distance between the source and the photoelectric surface is doubled, which of the following may result?
MCQM+2 / -02020
9Dual Nature Of Radiation
Electrons are emitted with kinetic energy T from a metal plate by an irradiation of light of intensity J and frequency v. Then, which of the following will be true?
MCQM+2 / -02019
10Dual Nature Of Radiation
When light of frequency v1 is incident on a metal with work function W (where hv1 > W), then photocurrent falls to zero at a stopping potential of V1. If the frequency of light is increased to v2, the stopping potential changes to V2. There...
MCQ+1 / -0.252017