Match the correct approximation(s) on the right with each statement on the left. note that a is thewidth of a single slit andλis the wavelength of light incident on that slit. i.a < < λa. the ray approximation is no longer valid. light is wavelike. ii. a≈λb. the primary effect of the opening is to act like a point source of waves. iii. a > > λc. the primary effect of the opening is minimal; light travels in a straight line through it. d. the primary effect of the opening is to diffract the light.

because growing process had stoped after 4-5 year

e/c, where e is its total energy

the aurora is formed when charged particles emitted from the sun during a solar flare penetrate the earth's magnetic shield and collide with atoms and molecules in our atmosphere. these collisions result in countless little bursts of light, called photons, which make up the aurora.

auroras are generated by charged solar particles hitting molecules in earth's atmosphere. this usually happens in high latitudes, because our planet’s magnetic field tends to funnel these particles toward the poles. that’s why it can be experienced in northern ohio.