You don't need to do any calculations, you are already given that n=1.5
n is index of refraction. it's 1.5
Consider the formula W = E^2/R
E is the same for both bulbs. Everything depends on R
Let us suppose that E = 100 volts (high consumption day).
Let us further suppose that r = 2 ohms
W = 100^2 / 2
W = 10,000 / 2
W = 5000 watts . (It's just a number).
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The second bulb has a resistance of 1 ohm.
W = 100^2 / 1
W = 10000 watts.
The lower the resistance the higher the wattage.
Answer: [D]: China .
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