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Physics Fun
Convergence of parallel light rays
Submit by Pearson, 2015-03

Three parallel light rays pass through a rectangular block and a convex lens. Then they converge to a point X as shown.




If the block is now rotated anticlockwise, the outgoing rays from the block are displaced upwards as shown. How does the position of X change?




A. It moves upwards.

B. It moves downwards.

C. It remains unchanged.

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