Question

1. A shopper standing 3.04 m from a convex security mirror sees his image with a magnification of 0.227. What is the focal length of the mirror?

2. A spear fisherman is looking for lunch when he spots a fish under water (n = 1.333). The fish appears to be at a depth of 1.393 meters when the fisherman's gaze is at an angle of 50.2° from being perpindicular with the surface of the water. What depth is the fish actually at?

3. Suppose you have an unknown clear substance immersed in water (n=1.333), and you wish to identify it by finding its index of refraction. You arrange to have a beam of light enter it at an angle of 42.6º , and you observe the angle of refraction to be 26.3º . What is the index of refraction of the substance?

**Plz answer all questions, don't have money for more.
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Answer #1

A shopper standing 1.46 m from a convex security mirror sees his
image with a magnification of 0.288. Determine the following.
(Include the correct sign.)
(a) location of his image
(b) focal length of the mirror (m)
(c) radius of curvature of the mirror (m)

A shopper standing 1.74 m from a convex security mirror sees his
image with a magnification of 0.242. Determine the following.
(Include the correct sign.)
(a) location of his image (m)
(b) focal length of the mirror (m)
(c) radius of curvature of the mirror (m)

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What is the focal length of 2.4 D reading glasses found on the
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How far, in centimeters from the lens must the film in a camera
be, if the lens has a 36.3 mm focal length and is being used to...

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