A lens of focal length 45 mm is used as a magnifier. The object being viewed is 6.8 mm long, and is positioned at the focal point of the lens. The lens is moved closer to the object, so that the image is now 25 cm from the lens
The distance the lens has been moved, in cm, is closest to: A) 0.69
B) 0.76
C) 0.62
D) 0.55
E) 0.48
A
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Three solid, uniform, cylindrical flywheels, each of mass 65.0 kg and radius 1.47 m rotate independently around a common axis
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The polarizing angle in air for diamond is 67.4°. Calculate the critical angle inside the diamond for total internal reflection
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