Answer:
Option (a) is correct.
Explanation:
The lines in the emission spectrum of hydrogen is due to the transfer of electrons form higher energy levels to the lower energy levels.
When the electrons transfer from one level of energy that is higher level of energy to the other means to the lower level of energy then they emit some photons which having the frequency or the wavelength in the visible region.
I don’t know if I’m completely right but Elements are arranged from left to right due to their atomic number
The answer is A. Cones, as rods are not sensitive to color. :)
Answer:
True
Explanation:
Friction between solids can be most accurately defined as the force that
opposes the sliding motion of two surfaces that are touching each other.
