A converging thin lens has a focal length of 27 centimeters. An object is placed 9 centimeters from the lens. Is the image of the object real or virtual? Answer : ANSWER: VIRTUAL...
An object is located 1 meter in front of a converging lens having a focal length of 20 centimeters. At what distance behind the lens (whose thickness is negligible) will the image be formed? w) 18 centimeters x) 20 centimeters y) 22 centimeters z) 25 centimeters Answer : ANSWER: Z -- 25 CENTIMETERS...
An object located four focal lengths in front of a thin, converging lens is moved to within two focal lengths of the lens. As a result, does the size of the image produced by the lens increase, decrease or remain the same? Answer : ANSWER: INCREASE...
The focal length of a concave mirror is 2 meters. An object is positioned 8 meters in front of the mirror. Where is the image of this object formed? Answer : ANSWER: 8/3 METER or 2.66 METERS IN FRONT OF THE MIRROR...
The measured distance from a lens to the object is 20 cm and from the lens to the image is 5 cm. Calculate the focal length
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