Q Amicrowave endiation has a frequency of 12 x 10 Hz Calculate
energy
of one mole of photos corresponding
to this radiation
(h=6.626x10JS: Na = 6.022 x 10 mol-1)

Which statement best describes the relationship between period and frequency of light waves? a) in wave b the period increases and the frequency decreases from wave a. b) in wave a the period increases and the frequency decreases from wave b. c) in wave b the period is shorter and the frequency is greater than in wave a. d) in wave a the period is shorter and the frequency is greater than in wave b.

Which part of earth’s surface receives the most direct rays from the sun? a) equator b) ocean c) poles d) mountains

The human eye contains a molecule called 11-cis-retinal that changes shape when struck with light of sufficient energy. the change in shape triggers a series of events that results in an electrical signal being sent to the brain that results in vision. the minimum energy required to change the conformation of 11-cis-retinal within the eye is about 164 kj/mol.