Through the 1/r law, it was concluded that for the sound intensity or pressure is directly proportional to distance or radius. That is,
p = k/r
where k is the proportionality constant. If the distance of a sound wave is quadrupled then, the intensity of the sound is decreased to 1/4 of its original value.
Diverging lens=concave lens
The image would be after the first focal point but before the lens and it will be smaller than the object. Look at my picture for reference. Please let me know if this helped you!
Distance = Speed × time
Distance = 31m/s × 13 seconds = 403m
Answer:
<h3>False</h3>
<h3> I hoped this helpful for you....</h3>
Thank you ☺️☺️