Ch 18: Ray Optics Flashcards

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1
Q

A diverging lens always has a negative _____ ______.

A

focal length

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2
Q

A lens is a transparent object that uses refraction of light rays at curved surfaces to form an image.
A converging lens will cause the rays to refract ______ the optical axis.

A

toward

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3
Q

18.3

When a ray is transmitted into a material with a HIGHER index of refraction (such as from air into water), it bends to make a ______ angle with the normal.

When transmitted into a material with a LOWER index of refraction, it bends to make a ______ angle with the normal.

A

smaller

larger

p. 628

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4
Q

What is the formula for calculating the critical angle of incidence for total internal reflection?

A

θc = sin-1 (n2/n1)

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