You visited us 1 times! Enjoying our articles? Unlock Full Access!

Pressure Wave Derivation

A travelling ...

Question

A travelling wave is represented by the equation $y = 20 s i n 2 (x - 4 t)$ . If y is measured in cms, what is the amplitude of the wave

20 mms

No worries! We‘ve got your back. Try BYJU‘S free classes today!

20 cm

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

20 m

No worries! We‘ve got your back. Try BYJU‘S free classes today!

2 cm

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B 20 cm
From dimensional analysis, we see A takes the same unit as that of y, since trigonometric function doesent have any unit
The correct option is (b)

Suggest Corrections

Similar questions

y = 0.25 cos (2 π t - π x)

y = 4 sin 2 π (\frac{t}{0.02} - \frac{x}{100})

y_{1} = 10 cos (5 x + 25 t)

x

y

centimetres

t

seconds

y_{2} = 20 cos (5 x + 25 t + π / 3)

y = 10 cos (2 π (t - 5 x))

x, y

cm

y = 6.0 sin (600 t - 1.8 x)

10^{- 5} m

x

Join BYJU'S Learning Program