A lens with f = + cm is in contact with a lens with f = -20 cm. What is the focal length of the combination (unit in cm)?

The schematic illustrates the far point and near point of the eye. Given that q = 80 cm, p = cm, and d = 1.7 cm, determine the power of accommodation of the eye (in diopters).

The schematic illustrates the far point and near point of the eye. Given that q = cm, p = 25 cm, and d = 1.7 cm, determine the refractive power (in diopters) of a corrective lens required so that objects at infinite distance can be seen clearly.

You combine two thin lenses by placing them in contact so that their axes coincide, forming what is called a compound lens. The focal lengths of the lenses are 30 cm and −50 cm, respectively. If an object is cm tall and d1 = cm, what is the height of the image (unit in cm)? Express the answer as a positive quantity.

A light beam strikes a piece of glass with an incident angle of 45o. The beam contains two colors:  450 nm and an unknown wavelength. The index of refraction for the 450-nm light is . Assume the glass is surrounded by air, which has an index of refraction of 1. Determine the index of refraction nu for the unknown wavelength if its refraction angle is o greater than that of the 450 nm light.  

A 0.50-mm-wide slit is illuminated by light of wavelength 500 nm. What is the width of the central maximum on a screen m behind the slit? Express your answer in mm.

The figure shows a converging lens forming an image of a real object. The height of the object and the image is 0.8 cm and cm, respectively. If d2 = cm, what is the focus length of the lens (unit in cm)? 

Match the following artists with the genre they are MOST associated with based on your Module 8 Reading

Which of the following is NOT a trend more commonly found in “Free” Jazz than in other jazz genres like Bop?

Trassign normally occurs under which of the following conditions?