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
Sign in to track your attempts and accuracy.
Sign in to keep a private note on this question. Nothing you write is ever public.
The equation of a plane progressive wave is given by $y = 5\cos\pi\left(200t - \dfrac{x}{150}\right)$ where $x$ and $y$ are in cm and $t$ is in second. The velocity of the wave is _______ m/s.
A transverse wave on a string is described by $y = 3\sin(36t + 0.018x + \pi/4)$, where $x, y$ are in cm and $t$ in seconds. The least distance between the two successive crests in the wave is _____ cm. (Nearest integer) ($\pi = 3.14$)
Two waves of same frequency and amplitude travel in opposite directions. The resulting pattern is:
A spring-mass system oscillates with angular frequency ω. If the mass is doubled and the spring constant is halved, the new angular frequency is:
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 $\_\_\_\_$ \%.
Work through every JEE Main Waves & Oscillations PYQ, year by year.