Waves for NEET: PYQ trend, NCERT lines NEET repeats, free lecture

Waves in NEET: the numbers

68NEET / AIPMT questions in our PYQ bank (1988–2026)

33exam years with a question from this chapter

6NCERT lines NEET asked more than once

Topics NEET asks most

Topic	Questions
Wave motion and speed of waves	30
Strings and organ pipes	18
Beats	13
Superposition and standing waves	7

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.

For y = a sin (ωt − kx) the wave speed is v = ω/k , the ratio of the t coefficient to the x coefficient. The sign of the x term gives the direction.

AIPMT 2001AIPMT 2006AIPMT 2009NEET 2013

An open pipe gives all harmonics with ν₁ = v/2L. A closed pipe gives only odd harmonics with ν₁ = v/4L, so its fundamental is half that of an open pipe of equal length.

NEET 2016NEET 2017NEET 2023NEET 2023

Beats per second equal |ν₁ − ν₂| . Raising a string's tension raises its frequency; if beats then fall, the string was the lower one, if they rise it was the higher one.

AIPMT 2006AIPMT 2009AIPMT 2010NEET 2020

A stretched string carries transverse waves at v = √(T/μ) . Doubling the tension raises the speed only by a factor √2, and μ is mass per unit length.

AIPMT 1989NEET 2016NEET 2022

Intensity goes as amplitude squared. For two coherent waves, Iₘₐₓ + Iₘᵢₙ = 2(I₁ + I₂) , since the extremes are (√I₁ ± √I₂)².

AIPMT 1989AIPMT 2008

Dip an open pipe halfway into water and it becomes a closed pipe of length L/2. Then v/(4·L/2) = v/2L, so the fundamental stays the same .

AIPMT 1997NEET 2025

Free lecture by Prashant Sir

CURRENT ELECTRICITY L-1 | NEET Physics Crash Course | NCERT Physics Class 12 · 2.3M views on YouTube

Free NCERT notes for Waves

Travelling waves, the speed of string waves and sound, superposition, standing waves on strings and in pipes, and beats. NEET usually asks a question from here, most often on harmonics of strings and pipes, wave equations or beats.

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 Waves in NEET?

Our bank of NEET and AIPMT papers (1988–2026) has 68 questions from Waves, most of them from Wave motion and speed of waves, Strings and organ pipes, Beats.

Which NCERT line of Waves has NEET asked the most?

This line has been asked 4 times in NEET/AIPMT: "For y = a sin (ωt − kx) the wave speed is v = ω/k, the ratio of the t coefficient to the x coefficient. The sign of the x term gives the direction."

Where can I study Waves 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.