JEE Main 2023 — Physics Waves & Oscillations
Match List I with List II
| List I | List II | ||
| A | Troposphere | I | Approximate 65−75km over Earth’s surface |
| B | E-Part of Stratosphere | II | Approximate 300km over Earth’s surface |
| C | F2-Part of Thermosphere | III | Approximate 10km over Earth’s surface |
| D | D-Part of Stratosphere | IV | Approximate 100km over Earth’s surface |
Held on 25 Jan 2023 · Verified 6 Jul 2026.
A-III, B-IV, C-II, D-I
A-I, B-II, C-IV, D-III
A-I, B-IV, C-III, D-II
A-III, B-II, C-I, D-IV
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The time period of a simple harmonic oscillator is $T=2 \pi \sqrt{\frac{k}{m}}$. Measured value of mass $(m)$ of the object is 10 g with an accuracy of 10 mg and time for 50 oscillations of the spring is found to be 60 s using a watch of 2 s resolution. Percentage error in determination of spring constant $(k)$ is $\_\_\_\_$ \%.
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In an open organ pipe $\nu_{3}$ and $\nu_{6}$ are $3^{\text {rd }}$ and $6^{\text {th }}$ harmonic frequencies, respectively. If $\nu_{6}-\nu_{3}=2200 \mathrm{~Hz}$ then length of the pipe is $\_\_\_\_$ mm . (Take velocity of sound in air is $330 \mathrm{~m} / \mathrm{s}$.)
A simple pendulum of string length 30 cm performs 20 oscillations in 10 s. The length of the string required for the pendulum to perform 40 oscillations in the same time duration is $\_\_\_\_$ cm. [Assume that the mass of the pendulum remains same.]
Work through every JEE Main Waves & Oscillations PYQ, year by year.