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The density of a gas filled in electric lamp is {0.75}{k}{g}/{

Question

The density of a gas filled in electric lamp is $0.75 k g / m^{3}$ . After the lamp has been switched on, the pressure in it increases from $4 \times 10^{4}$ Pa to $9 \times 10^{4}$ Pa. What is increases in $u_{rms}$ ?

100

200

300

None of these

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The density of a gas filled in electric lamp is

0.75 k g / m^{3}

. After the lamp has been switched on, the pressure in it increases from

4 \times 10^{4}

Pa to

9 \times 10^{4}

Pa. What is increases in

u_{rms}

8 mins ago

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Text solutionVerified

Answer: bSolution: (b)

U_{1} = \frac{3 P _{1}}{d _{1}}

∴ △ U_{rms} = \frac{3}{d} (P_{2} - P_{1})

= \frac{3}{0.75} (300 - 200)

= 4 \times 100 = 200

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Question Text	The density of a gas filled in electric lamp is $0.75 k g / m^{3}$ . After the lamp has been switched on, the pressure in it increases from $4 \times 10^{4}$ Pa to $9 \times 10^{4}$ Pa. What is increases in $u_{rms}$ ?
Answer Type	Text solution:1
Upvotes	152