Answer:
D
Explanation:
The resolution of a light microscope is approximately 200 nanometers due to the wavelength of light. A eukaryotic cell is approximately 1 – 5 micrometers. This means that light can be used to view a eukaryotic cell because the wavelength of light is smaller than the size of the cell. The other options are of a smaller size than the light wavelength and hence lower wavelength beams (such as those of electron microscope) or laser can be used to view them.
I do believe it is C. wave length <span />
<u>Answer:</u> The value of energy change is
<u>Explanation:</u>
To calculate the energy of one photon, we use Planck's equation, which is:
where,
h = Planck's constant =
c = speed of light =
= wavelength = 500 nm = (Conversion factor: )
Putting values in above equation, we get:
Hence, the value of energy change is
<span>Gamma rays, X-rays, and UV radiation is reflected by the ozone layer.</span>