Day 32: JEE Mains Physics

Oscillations. This type asked 5 times: 2021 Paper 2, 2021 Paper 4, 24 Jan 2023, 31 Jan 2023, 6 Apr 2023. This one: 6 Apr 2023 See all 5 of this type

18

A mass $m$ is attached to two springs as shown in figure. The spring constants of two springs are $K_{1}$ and $K_{2}$. For the frictionless surface, the time period of oscillation of mass $m$ is

1. A.
   $\frac{1}{2\pi}\sqrt{\frac{K_{1} + K_{2}}{m}}$
2. B.
   $\frac{1}{2\pi}\sqrt{\frac{K_{1} - K_{2}}{m}}$
3. C.
   $2\pi\sqrt{\frac{m}{K_{1} + K_{2}}}$
4. D.
   $2\pi\sqrt{\frac{m}{K_{1} - K_{2}}}$

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Alternating Current. This type asked 5 times: 2021 Paper 8, 14 Jun 2022, 28 Jul 2022, 29 Jul 2022, 31 Jan 2023. This one: 31 Jan 2023 See all 5 of this type

Moving Charges and Magnetism. This type asked 5 times: 25 Jul 2022, 26 Jul 2022, 29 Jul 2022, 29 Jan 2023, 31 Jan 2023. This one: 31 Jan 2023 See all 5 of this type

Waves. This type asked 5 times: 2021 Paper 19, 14 Jun 2022, 25 Jul 2022, 29 Jan 2023, 31 Jan 2023. This one: 31 Jan 2023 See all 5 of this type

Current Electricity. Asked 4 times: 2021 Paper 20*, 29 Jun 2022*, 31 Jan 2023*, 28 Jan 2026 S1 (* = numbers or wording changed that year) See all 4 times it was asked