MHT CET 2023 14th May Morning Shift | Waves Question 8 | Physics

If '$$l$$' is the length of the open pipe, '$$r$$' is the internal radius of the pipe and '$V$ ' is the velocity of sound in air then fundamental frequency of open pipe is

$$\frac{\mathrm{V}}{(l+0.3 \mathrm{r})}$$

$$\frac{\mathrm{V}}{(l+1.2 \mathrm{r})}$$

$$\frac{\mathrm{V}}{(l+0.6 \mathrm{r})}$$

$$\frac{\mathrm{V}}{2(l+1.2 \mathrm{r})}$$

MHT CET 2023 13th May Evening Shift

MCQ (Single Correct Answer)

-0

When two tuning forks are sounded together, 5 beats per second are heard. One of the forks is in unison with $$0.97 \mathrm{~m}$$ length of sonometer wire and the other is in unison with $$0.96 \mathrm{~m}$$ length of the same wire. The frequencies of the two tuning forks are

$$383 \mathrm{~Hz}, 388 \mathrm{~Hz}$$

$$475 \mathrm{~Hz}, 480 \mathrm{~Hz}$$

$$388 \mathrm{~Hz}, 39 z \mathrm{~Hz}$$

$$480 \mathrm{~Hz}, 485 \mathrm{~Hz}$$

MHT CET 2023 13th May Evening Shift

MCQ (Single Correct Answer)

-0

The equation of a progressive wave is $$Y=a \sin 2 \pi\left(n t-\frac{x}{5}\right)$$. The ratio of maximum particle velocity to wave velocity is

$$\frac{\pi a}{5}$$

$$\frac{2 \pi a}{5}$$

$$\frac{3 \pi a}{5}$$

$$\frac{4 \pi a}{5}$$

MHT CET 2023 13th May Evening Shift

MCQ (Single Correct Answer)

-0

A transverse wave strike against a wall,

its phase changes by $$180^{\circ}$$ but velocity does not change

its phase does not change but velocity changes

its velocity changes and phase changes by $$180^{\circ}$$

nothing can be predicted about changes in its velocity and phase

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