| ⇦ |
| ⇨ |
The wave described by y = 0.25 sin (10 2πx – 2πt), where x and y are in meters and t in second is a wave travelling along the:
Options
(a) negative x direction with frequency 1 Hz.
(b) positive x direction with frequency π Hz and wavelength λ = 0.2 m.
(c) positive x direction with frequency 1 Hz and wavelength λ = 0.2 m.
(d) negative x direction with amplitude 0.25 m and wavelength λ = 0.2 m.
Correct Answer:
positive x direction with frequency 1 Hz and wavelength λ = 0.2 m.
Explanation:
y = 0.25 sin (10 2πx – 2πt) Comparing this equation with the standard wave equation
y = a sin (kx – ?t) We get, k = 10π
⇒ 2π / λ = 10π ⇒ λ = 0.2 m.
? = 2π or, 2πv = 2π ⇒ v = 1 Hz.
The sign insider the bracket is negative, hence the wave travels in +ve x-direction.
Related Questions: - An electric dipole of moment p is lying along a uniform electric field E. The work
- A body is thrown with a velocity of 9.8 m/s making angle of 30° with the horizontal
- A bar magnet is hung by a thin cotton thread in a uniform horizontal magnetic field
- The wave function (in SI unit) for a light wave is given as Ψ(x,t)= 10³ sin π
- The angle of incidence at which reflected light is totally polarised for refraction
Topics: Waves
(80)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- An electric dipole of moment p is lying along a uniform electric field E. The work
- A body is thrown with a velocity of 9.8 m/s making angle of 30° with the horizontal
- A bar magnet is hung by a thin cotton thread in a uniform horizontal magnetic field
- The wave function (in SI unit) for a light wave is given as Ψ(x,t)= 10³ sin π
- The angle of incidence at which reflected light is totally polarised for refraction
Topics: Waves (80)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends

Leave a Reply