Intensity and Loudness

Let the source propagate a sound wave whose intensity at a point (initially) be I. Suppose we consider a case when the amplitude of the sound wave is doubled and the frequency is reduced to one-fourth. Calculate now the new intensity of sound at the same point?

Why is the roar of our national animal different from the sound of a mosquito?

In an empty room why is it that a tone sounds louder than in the room having things like furniture etc.

Write a short note on intensity.

Which of the following options is correct?

Options for (1), (2) and (3), respectively are

A man sitting on a swing which is moving to an angle of 60° from the vertical is blowing a whistle which has a frequency of 2.0 k Hz. The whistle is 2.0 m from the fixed support point of the swing. A sound detector which detects the whistle sound is kept in front of the swing. The maximum frequency the sound detector detected is

Define intensity of sound.

Define loudness of sound.