In an experiment, light shines on a convex lens. Some of the lightrefracts through the lens, forming a real focus F1. Some of thelight reflects off the front surface (which acts like a convexmirror), forming a virtual focus F2.
1) If the index of refraction of the lens material increases, F1will:
(a) decrease
(b) remain the same
(c) increase
2) If the index of refraction of the lens material increases, F2will
(a) remain the same
(b) decrease
(c) increase
3) In this procedure: the laser box is placed 14.8 cm from theconvex lens, and you find the focal length of the lens is 9.14 cm.If the distance from the lens to the laser box is now 23.9 cm, whatwill the focal length of the lens be?
In an experiment, light shines on a convex lens. Some of the lightrefracts through the lens, forming a real focus F1. Some of thelight reflects off the front surface (which acts like a convexmirror), forming a virtual focus F2.
1) If the index of refraction of the lens material increases, F1will:
(a) decrease
(b) remain the same
(c) increase
2) If the index of refraction of the lens material increases, F2will
(a) remain the same
(b) decrease
(c) increase
3) In this procedure: the laser box is placed 14.8 cm from theconvex lens, and you find the focal length of the lens is 9.14 cm.If the distance from the lens to the laser box is now 23.9 cm, whatwill the focal length of the lens be?
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