Oscillations

JEE Main 2025 (Online) 23rd January Morning ShiftMCQMedium📈 Topic in 5% papers+4−1

Ques. 1JEE Main 2025, 23 January (Morning Shift)

A light hollow cube of side length 10 cm and mass 10 g, is floating in water. It is pushed down and released to execute simple harmonic oscillations. The time period of oscillations is y 10-2 s, where the value of y is (Acceleration due to gravity, g=10 m/s2, density of water =103 kg/m3 )

Answer

(1) 2

Solution

Pushed down by x, the extra upthrust is the restoring force: F=- Ag x, so k= Ag (SHM).

[figure]

k=103 10-2 10=100 N m-1, m=10-2 kg

T=2 mk=2 10-2 s y=2

Answer: (1)

Keep practising — Oscillations

Ques. 2JEE Main 2025, 22 January (Evening Shift)

Given below are two statements. One is labelled as Assertion (A) and the other is labelled as Reason (R). In the light of the above statements, choose the correct answer from the options given below :

Both (A) and (R) are true and (R) is the correct explanation of (A)
(A) is false but (R) is true
(A) is true but (R) is false
Both (A) and (R) are true but (R) is NOT the correct explanation of (A)

All Oscillations PYQs →

PDFDownload Oscillations PYQs as PDF Free, with answer key and a QR code to every solution — print it or study offline⬇

All JEE Main Physics chapters

Class 11Units and Measurements Motion in a Straight Line Motion in a Plane Laws of Motion Work, Energy and Power System of Particles and Rotational Motion Gravitation Mechanical Properties of Solids Mechanical Properties of Fluids Thermal Properties of Matter Thermodynamics (Physics)Kinetic Theory Oscillations Waves

Class 12Electric Charges and Fields Electrostatic Potential and Capacitance Current Electricity Moving Charges and Magnetism Magnetism and Matter Electromagnetic Induction Alternating Current Electromagnetic Waves Ray Optics and Optical Instruments Wave Optics Dual Nature of Radiation and Matter Atoms Nuclei Semiconductor Electronics Experimental Skills (Physics)