True statements about visual adaptation include:
a. light adaptation takes longer than dark adaptation
b. dark adaptation reaches its maximum in about 20 minutes
c. in dark adapted eye, a higher intensity of light is required to stimulate cones than rods
d. people who wear red goggles in the light adapt quicker in the dark than those who do not wear them
a. light adaptation takes longer than dark adaptation
b. dark adaptation reaches its maximum in about 20 minutes
c. in dark adapted eye, a higher intensity of light is required to stimulate cones than rods
d. people who wear red goggles in the light adapt quicker in the dark than those who do not wear them