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Q1. If the focal length of the concave lens is -7.50, at what distance from the lens must an object be placed so that its image is formed 3.70 from lens?

Q2. A plane first moves from the origin to point A located at 170 km in direction of 30 degree north of east after that it flies 150 km 20 degree west of north to point B finally it flies 195 km due west to point C. find the location of C from origin.

Q3. One wishes to utilize neutrons to resolve two objects. The neutrons are emitted from the separate objects with a speed of v = 2.1 x 103 m/s and pass through a circular opening with diameter d = 0.06 mm. According to the Rayleigh criterion, what should be the minimum angle between the two objects?

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Category:- Physics
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