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Q.

A 100 W bulb B1, and two 60 W bulbs B2 and B3, are connected to a 250 V source as shown in fig. NowW1,W2, and W3  are the output powers of the bulbs B1,B2 and B3, respectively. Then

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a

W1>W2=W3

b

W1>W2>W3

c

W1

d

W1

answer is D.

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Detailed Solution

It is obvious that voltage across B3 is greatest and hence it glows brightest. In series connection, bulb of lesser wattage will glow brighter. HenceW2 >W1.SoW1
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