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Physics

Oscillations

Simple harmonic motion is the heart of this chapter: displacement and velocity equations, springs, the simple pendulum, and energy in SHM. NEET works it through numericals on time period and energy, plus displacement-time graph questions.

Exam rules change between cycles. Confirm dates, syllabus and pattern against NTA's official site. We are not NTA.

Weightage: what the paper actually did

Oscillations carried 3 questions in the NEET 2026 paper. One paper is a data point, not a destiny: NTA moves weight between chapters every cycle, which is why the weightage tables deserve care. The stable facts are the paper's shape: 180 questions, 720 marks, +4 right, −1 wrong.

Sample PYQs from this chapter

Real questions NTA asked from Oscillations, with the answer and the working. Try before you peek.

Question 1 · NEET 2026

Savitha, a XI standard student, while conducting an experiment to determine the effective length of a simple pendulum LL, notes down the data of time taken to complete 30 oscillations as 60 s and hence calculates the length of the simple pendulum as: (Take π2=9.8\pi^2 = 9.8, and g=9.8g = 9.8 m/s2^2)
  1. A.0.75 m
  2. B.1.5 m
  3. C.2 m
  4. D.1 m
Answer and explanation

Answer: D

The time period is T=60/30=2T = 60/30 = 2 s. From T=2πL/gT = 2\pi\sqrt{L/g}, the length is L=gT24π2=9.8×44×9.8=1L = \frac{gT^2}{4\pi^2} = \frac{9.8\times4}{4\times9.8} = 1 m. The other options result from arithmetic or period errors. Why the other options are wrong: - (A) Arithmetic error in L. - (B) Wrong period or factor. - (C) Uses T incorrectly.

Question 2 · NEET 2026

The sum of kinetic energy and potential energy of a simple pendulum bob is 0.02 joule. The speed of the simple pendulum bob at equilibrium position is approximately: (Consider mass of the bob = 20 g)
  1. A.0.2 m/s
  2. B.1.41 m/s
  3. C.14.1 m/s
  4. D.2.0 m/s
Answer and explanation

Answer: B

At the equilibrium (lowest) point the bob's energy is entirely kinetic, so 12mv2\tfrac{1}{2}mv^2 equals the total energy 0.02 J. With m = 20 g = 0.02 kg, v2=2(0.02)0.02=2v^2 = \dfrac{2(0.02)}{0.02} = 2, giving v=2≈1.41 m/sv = \sqrt{2} \approx 1.41\ \text{m/s} (option B). The value 14.1 comes from a mass-unit slip and 0.2 from mishandling the powers of ten.

How to practise Oscillations

Chapter by chapter, against real past-paper questions, on a screen: NEET is computer based from 2027. Read the chapter once, then attempt its PYQs until your accuracy stops climbing, and let the wrong answers tell you which lines to reread. If the chapter keeps refusing to stick, that has its own guide. There is also a free 12-question mock on the exam screen.

Nearby Physics chapters

Questions

How many questions did Oscillations have in NEET 2026?

Oscillations carried 3 questions in the NEET 2026 paper. Weightage shifts between cycles, so treat it as a probability, not a promise.

Where can I practise Oscillations PYQs for NEET?

In the BrainIt app, free until the 2027 exam: its bank holds 50,000 past NTA questions tagged to all 83 chapters, including this one, with accuracy tracked per chapter. Sample questions from this chapter are on this page.

Is Oscillations important for NEET 2027?

It is part of the Physics syllabus the paper draws from, and NEET 2027 is computer based, so practise it on a screen. Your own accuracy in the chapter matters more than any weightage table: a heavy chapter you already score well on needs less time than a light one you keep missing.

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