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Q1. An instructor wants to use a lens to project the real image of a light bulb onto a screen 1.23 m from the bulb. In order to get the image to be two times as large as bulb, what focal length lens will be required?

Q2. l= 50 m at a speed that increases with time, v = (0.2 t2) m/s. Find the magnitudes of the boat's velocity and acceleration at the instant t = 3 sρ Starting from rest, motorboat travels around a circular path of?

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Category:- Physics
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