determine the minimum separation distance (in cm) between two point sources that the eye (with pupil diameter of 2 mm) can distinguish if the point sources are a distance of 30.0 cm from the observer, assuming its resolution is limited only by diffraction and the wavelength of light is 500 nm.

answer: the exterior temperature of commercial jet planes as they leave the stratosphere and return to the ground increases steadily.

explanation:

the lower most layer of atmosphere is troposphere which extends from 0 to 12 km above the surface of the earth. the temperature initially decreases as distance is increased from the earth's surface. commercial jets fly in lower part of the stratosphere. the stratosphere extends upto 50 km. the temperature in stratosphere starts rising again due to presence of ozone which traps the uv rays.

thus, when the planes leave the stratosphere and return to the ground, the exterior temperature increases steadily.