Learn

Friday, 9 October

JEE Main 2023 · PhysicsNumerical answerNumerical valueEasyCalculation

JEE Main 11 April 2023, Shift 1, Physics Q56

Question 56 of 90 in this shift, Physics question 26 of 30, Section B.

The equation of wave is given by Y=10−2sin⁡2π(160t−0.5x+π/4)Y = 10^{-2}\sin 2\pi(160t - 0.5x + \pi/4) where xx and YY are in m and tt in s. The speed of the wave is __________ km h−1^{-1}.

Official answer

1152

NTA final key.

Chapter
Waves

Same topic in other shifts

All Waves on Strings questions
  1. 2 Apr 2026, Shift 1 · Q35The equation of a plane progressive wave is given by y=5cos⁡π(200 t−x150)y=5\cos\pi\left(200\,t-\frac{x}{150}\right) where xx and yy are in cm and tt is…EasySingle correct
  2. 7 Apr 2025, Shift 2 · Q35The equation of a wave travelling on a string is y=sin⁡[20πx+10πt]y=\sin[20\pi x+10\pi t], where xx and t are distance and time in SI units. The minimum…MediumSingle correct
  3. 8 Apr 2025, Shift 2 · Q34Two strings with circular cross section and made of same material, are stretched to have same amount of tension. A transverse wave is then…EasySingle correct
  4. 8 Apr 2025, Shift 2 · Q40The amplitude and phase of a wave that is formed by the superposition of two harmonic travelling waves, y1(x,t)=4sin⁡(kx−ωt)y_1(x, t) = 4\sin(kx - \omega t)…MediumSingle correct
  5. 8 Apr 2023, Shift 2 · Q51A guitar string of length 90 cm vibrates with a fundamental frequency of 120 Hz. The length of the string producing a fundamental…EasyNumerical value
  6. 13 Apr 2023, Shift 2 · Q54In an experiment with sonometer when a mass of 180 g is attached to the string, it vibrates with fundamental frequency of 30 Hz. When a…EasyNumerical value

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.