Which statement correctly describes the relationship between frequency and wavelength?

Modern physics a photon emitted from an excited hydrogen atom has an energy of 3.02 electron volts. which electron energy-level transition would produce this photon? a. n=1 to n=6 b. n=2 to n=6 c. n=6 to n=1 d. n=6 to n=2 i chose b but the correct answer is d can someone tell me why? and what's the difference?

Work = force × a. work b. energy c. distance d. momentum

Which branches of natural science include the study of an organism that lived 10 million years ago