NEET Physics Kotaby Prashant Sir

Dual Nature of Radiation and Matter for NEET

Class 12 · What NEET asks, the NCERT lines it repeats, and where to study it free

Dual Nature of Radiation and Matter in NEET: the numbers

95NEET / AIPMT questions in our PYQ bank (1988–2026)
37exam years with a question from this chapter
6NCERT lines NEET asked more than once

Topics NEET asks most

TopicQuestions
Photoelectric effect 68
Matter waves and de Broglie relation 27

NCERT lines NEET asked again and again

Read these lines from your NCERT book twice: NEET has built questions on each of them more than once.

More intensity means more photons, so a larger photocurrent , but the maximum kinetic energy and V₀ stay the same .
AIPMT 2009AIPMT 2010NEET 2013NEET 2023
For a charge accelerated through V, λ = h/√2mqV ; for an electron λ∝1/√V, so more volts means a shorter wavelength.
AIPMT 2011NEET 2014NEET 2019NEET 2020
At equal energy, the photon's wavelength is much longer, since λₚₕ/λₑ = c√(2m/E) ; at equal wavelength, both have the same momentum .
AIPMT 1995NEET 2016NEET 2025NEET 2026
Emission needs the light's frequency to be above the threshold frequency ν₀; brightness or waiting time cannot make up for a low frequency.
AIPMT 2011AIPMT 2011NEET 2019
One photon gives all its energy to one electron: Kₘₐₓ = hν − φ₀ , and the stopping potential satisfies eV₀ = Kₘₐₓ .
AIPMT 2010AIPMT 2011NEET 2022
A photon has E = hν and p = h/λ , travels at c, and photoelectric emission is the proof of light's particle nature .
AIPMT 2000AIPMT 2001NEET 2024

Free lecture by Prashant Sir

ATOMS AND NUCLEI - Modern Physics L-8 | NEET Physics Crash Course | NCERT Physics Class 12 · 1.9M views on YouTube

Free NCERT notes for Dual Nature of Radiation and Matter

Light acts as particles (photons) in the photoelectric effect, and moving particles act as waves (de Broglie). It is a short, formula-driven chapter, and NEET almost always sets at least one numerical or graph question from it.

Read the chapter notes: key NCERT points, graphs, every formula with its meaning, tricks, common mistakes and NEET traps.

FAQ

How many questions come from Dual Nature of Radiation and Matter in NEET?

Our bank of NEET and AIPMT papers (1988–2026) has 95 questions from Dual Nature of Radiation and Matter, most of them from Photoelectric effect, Matter waves and de Broglie relation.

Which NCERT line of Dual Nature of Radiation and Matter has NEET asked the most?

This line has been asked 4 times in NEET/AIPMT: "More intensity means more photons, so a larger photocurrent, but the maximum kinetic energy and V₀ stay the same."

Where can I study Dual Nature of Radiation and Matter for NEET for free?

Prashant Sir's full lecture is free on the NEET Physics Kota YouTube channel, and the chapter notes are free on Dhruv.