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A wave travelling in the +ve x-direction having displacement along y-direction as 1m, wavelength 2π and frequency 1 /π Hz is represented by
Options
(a) y = sin ( 2 πx – 2 πt )
(b) y = sin ( 10 πx – 20 πt )
(c) y = sin ( 2 πx + 2 πt )
(d) y = sin ( x – 2t )
Correct Answer:
y = sin ( x – 2t )
Explanation:
As Y = A sin (ωt – kx + ɸ)
ω = 2πf = 2π / π = 2 [f = 1/ π]
k = 2π / λ = 2π / 2π = 1 [ λ = 2π]
Therefore,
Y = 1 sin (2t – x + ɸ) [A = 1 m]
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Topics: Waves
(80)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Two charged particles have charges and masses in the ratio 2:3 and 1:4 respectively.
- A,B and C are voltmeters of resistance R, 1.5 R and 3R respectively, as shown
- A particle moves in a straight line with a constant acceleration
- For a given velocity, a projectile has the same range R for two angles of projection.
- A point performs simple harmonic oscillation of period T and the equation of motion
Topics: Waves (80)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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