Population density = Number of beetles / Unit Square Area
= 20 beetles / 5m² = 4 beetles per m²
The ranges of frequency are:
UVA: ![[7.50-9.38]\cdot 10^{14} Hz](https://tex.z-dn.net/?f=%5B7.50-9.38%5D%5Ccdot%2010%5E%7B14%7D%20Hz)
UVB: ![[9.38-10.71]\cdot 10^{14} Hz](https://tex.z-dn.net/?f=%5B9.38-10.71%5D%5Ccdot%2010%5E%7B14%7D%20Hz)
Explanation:
The relationship between frequency and wavelength for an electromagnetic wave is the following:

where
f is the frequency
is the speed of light
is the wavelength
For the UVA, the range of wavelength is 320 nm - 400 nm, so

So the corresponding frequencies are

For the UVB, the range of wavelength is 280 nm - 320 nm, so

So the corresponding frequencies are

So the ranges of frequency are:
UVA: ![[7.50-9.38]\cdot 10^{14} Hz](https://tex.z-dn.net/?f=%5B7.50-9.38%5D%5Ccdot%2010%5E%7B14%7D%20Hz)
UVB: ![[9.38-10.71]\cdot 10^{14} Hz](https://tex.z-dn.net/?f=%5B9.38-10.71%5D%5Ccdot%2010%5E%7B14%7D%20Hz)
Learn more about waves, frequency and wavelength:
brainly.com/question/5354733
brainly.com/question/9077368
#LearnwithBrainly
The exact magnification of the objects is calculated by dividing the cinema. We calculate it by diving the erect image size by the object size. From the given above, we find the exact magnification by dividing 5.0 cm by 1.0 cm. Thus, the answer would be 5.
Some Substance are moved by energy,some pass through diffusion