Question

Statement I: The $200\, W$ bulbs glows with more brightness then $100 \,W$ bulbs.
Statement II: A $100 \,W$ bulb has more resistance than a $200 \,W$ bulb.

• A. If both statements are true and statement II is the correct explanation of statement I.
• B. If both statements are true but statement II is not the correct explanation of statement $I$.
• C. If statement $I$ is true but statement II is false.
• D. If both statements are false.

Answer 1

Answer: (A)

Resistance, $R=\frac{V^{2}}{P} \Rightarrow R \propto 1 / P$
i.e., higher is the wattage of a bulb, lesser is the resistance and so it will glow bright.