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Q. A 4.0 cm tall object is placed 50 cm away from a converging lens of focal length 25 cm. What is the nature and location of the image?

Q. (a) What is the resistance in each bulb if the power consumption is 50 W when the bulbs are connected in series? (b) If the 10 bulbs are connected in parallel, an additional resistor is needed so that the bulbs do not burn out. The resistor is connected in series with the total set of lightbulbs. What is the value of the resistance? What is the power loss in the resistor?

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