Physics

The dimensional formula $$[ML^1T^{-3}]$$ is more closely associated with


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Single Correct Medium Published on 18th 08, 2020
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The velocity $$v$$ of a particle at time $$t$$ is given by $$\displaystyle v= at+\frac{b}{t+c}$$, where $$a, b$$ and $$c$$ are constants. The dimensions of $$a, b$$ and $$c$$ are respectively
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Q2 Multiple Correct Hard
A person measures the depth of a well by measuring the time interval between dropping a stone and receiving the sound of impact with the bottom of the well. The error in his measurement of time is $$\delta T=0.01$$ seconds and he measures the depth of the well to be $$L=20$$ meters. Take the acceleration due to gravity $$g=10 ms^{-2}$$ and the velocity of sound $$300 ms^{-1}$$. Then the fractional error in he measurement $$\dfrac{\delta L}{L}$$, is closest to
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Q4 Single Correct Medium
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Consider three quantities $$x=E/B, y =\sqrt {1/\mu_0\varepsilon_0}$$ and $$Z=\dfrac {l}{CR}$$. Here, $$l$$ is the length of a wire, $$C$$ is a capacitance and $$R$$ is a resistance. All other symbols have standard meanings.
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Asked in: Physics - Units and Measurement


1 Verified Answer | Published on 18th 08, 2020

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