Robert and Carlos went to see movie in a cinema hall. They observed that the beam of light was focused on the screen from behind through a hole, to obtain the images on the screen of the cinema hall. The nature of image on the screen of the cinema hall was:
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Answer:
convex lens
Explanation:
These images are formed by a convex lens which is used in a movie projector.
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The nature of image is real.
The projectors have convex lens. The image formed by lens from projector is real which is inverted and magnified in nature.
The images casted on screen are upright, because image formed passes through pinhole which further inverts the image. Thus, upright image is seen.
Other uses of convex lens are in glasses to treat farsightedness and camera.
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