Physics

# The relation gives the value of 'x'$x=\dfrac{a^3b^3}{c\sqrt{d}}$The percentage error in 'x', if the percentage error in a, b, c, d are $2\%$, $1\%$, $3\%$ and $4\%$ respectively, is?

$\pm 14\%$

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Single Correct Medium Published on 18th 08, 2020
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#### Realted Questions

Q1 Single Correct Medium
The dimensions of physical quantity X in the equation Force $=\dfrac{X}{Density}$ is given by
• A. $M^1L^4T^{-2}$
• B. $M^2L^2T^{-1}$
• C. $M^2L^{-2}T^{-2}$
• D. $M^1L^{-2}T^{-1}$

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q2 Single Correct Medium
If $\xrightarrow { A } =3\hat { i } -\quad 4\hat { j }$ and $\overrightarrow { B } =-\hat { i } -\quad 4\hat { j }$, calculate the direction of $\overrightarrow { A } -\overrightarrow { B }$
• A. along positive x- axis
• B. along negative x- axis
• C. along positive y- axis
• D. along negative y - axis

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q3 Assertion & Reason Medium
##### ASSERTION

The dimensional formula for product of resistance and conductance is same as for dielectric constant

##### REASON

Both have dimensions of time constant

• A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
• B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
• C. Assertion is correct but Reason is incorrect
• D. Both Assertion and Reason are incorrect

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q4 Single Correct Medium
The dimensions of latent heat are -
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Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q5 Single Correct Medium
If $X=\varepsilon_0L\dfrac{\Delta V}{\Delta t}$
Here, $\varepsilon_0=$ electric permitivity of free space
$L=$ length
$\Delta V=$ potential difference
$\Delta t=$ time interval
What are the dimensions of X? Guess the physical quantity:
• A. Electric current, $[A^0M^0L^0T^0]$
• B. Electric potential, $[AM^0L^0T^0]$
• C. Electric current, $[AM^0L^0T^0]$
• D. None of the above

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020