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JEE Main 201219 MayOnline

Exam: JEE Main
Year: 2012
Date: 19 May
Mode: Online
Subject: Physics
Chapter: Oscillations

JEE Main 2012 · 19 May · Online · Physics · Oscillations

The displacement y(t)=A (ω t+φ) of a pendulum for φ=(2 π)/(3) is...

The displacement

y(t)=A \sin (\omega t+\phi)

of a pendulum for

\phi=\frac{2 \pi}{3}

is correctly represented by The displacement y(t)=A (ω t+φ) of a pendulum for φ=(2 π)/(3) is correctly represented by

The displacement y(t)=A (ω t+φ) of a pendulum for φ=(2 π)/(3) is correctly represented by

The displacement y(t)=A (ω t+φ) of a pendulum for φ=(2 π)/(3) is correctly represented by

The displacement y(t)=A (ω t+φ) of a pendulum for φ=(2 π)/(3) is correctly represented by

The displacement y(t)=A (ω t+φ) of a pendulum for φ=(2 π)/(3) is correctly represented by

Options

A
B
C
D

Correct answer

A. What is the primary effect of particulate pollutants on human health?

Step-by-step solution

Displacement

y(t)=A \sin (\mathrm{w} t+\phi)

[Given] For

\phi=\frac{2 \pi}{3}

at

t=0 ; y=A \sin \phi=A \sin \frac{2 \pi}{3}

=A \sin 120^{{}^{\circ}}=0.87

\mathrm{~A}\left[\because \sin

120^{{}^{\circ}} \simeq 0.866\right] Graph (a) depicts

y=0.87 A

at

t=0

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