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can you please solve question 1 as soon as possible

YASH AHUJA , 7 Years ago
Grade 11
anser 2 Answers
Manish Tiwari

Last Activity: 7 Years ago

The correct answer is B.
In order to solve the question properly you need to use the standard wave eqution in terms of w,lamda and t.

Khimraj

Last Activity: 7 Years ago

since cos2\Theta = ½(1 + cos2\Theta)
So
y = A/2[1+cos2(2πnt – 2π(x/\lambda)]
Then
y = A/2 + A/2[cos(4πnt – 4π(x/\lambda)]
So Amplitude is A/2
frequency is 2n
and wavelength is \lambda/2.
Hope it clears.

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