MHT CET 2019 2nd May Evening Shift | Waves Question 111 | Physics

Find the wrong statement from the following about the equation of stationary wave given by $Y=0.04 \cos (\pi x) \sin (50 \pi t) \mathrm{m}$ where $t$ is in second. Then for the stationary wave.

Time period $=0.02 \mathrm{~s}$

Wavelength $=2 \mathrm{~m}$

Velocity $=50 \mathrm{~m} / \mathrm{s}$

Amplitude $=0.02 \mathrm{~m}$

MHT CET 2019 2nd May Morning Shift

MCQ (Single Correct Answer)

-0

Two open pipes of different lengths and same diameter in which the air column vibrates with fundamental frequencies ' $n_1$ ', and ' $n_2$ ' respectively. When both pipes are joined to form a single pipe, its fundamental frequency will be

$\frac{n_1+n_2}{n_1 n_2}$

$\frac{n_1 n_2}{2 n_2+n_1}$

$\frac{2 n_2+n_1}{n_1 n_2}$

$\frac{n_1 n_2}{n_1+n_2}$

MHT CET 2019 2nd May Morning Shift

MCQ (Single Correct Answer)

-0

The equation of simple harmonic progressive wave is given by $Y=a \sin 2 \pi(b t-c x)$. The maximum particle velocity will be twice the wave velocity if

$c=\pi a$

$c=\frac{1}{2 \pi a}$

$c=\frac{1}{\pi a}$

$c=2 \pi a$

MHT CET 2019 2nd May Morning Shift

MCQ (Single Correct Answer)

-0

In a fundamental mode,the time required for the sound wave to reach upto the closed end of a pipe filled with air is ' $t$ ' second. The frequency of vibration of air column is

$(2 t)^{-1}$

$4(t)^{-1}$

$2(t)^{-1}$

$(4 t)^{-1}$

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