Physics

# A physical quantity, $y = \dfrac {a^4b^2}{(cd^4)^{1/3}}$ has four quantities $a, b, c$ and $d$. The percentage error in each quantity are $2\%, 3\%, 4\%$ and $5\%$ respectively. The error in $y$ will be:

$22\%$

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Single Correct Medium Published on 18th 08, 2020
Questions 244531
Subjects 8
Chapters 125
Enrolled Students 202

#### Realted Questions

Q1 Single Correct Medium
The physical quantity having the dimensions$\left[ { M }^{ -1 }{ L }^{ -3 }{ T }^{ 3 }{ A }^{ 2 } \right]$ IS
• A. resistance
• B. resistivity
• C. electrical conductivity
• D. electromotive force

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q2 Single Correct Medium
If G is universal gravitation constant and g is acceleration due to gravity, then dimensions of $G$ will be
• A. $[M^1 L^2 T]$
• B. $[{{M}^{-1}}{{L}^{3}}{{T}^{-2}}]$
• C. $[M^2 L T]$
• D. $[{{M}^{1}}{{L}^{3}}{{T}^{-2}}]$

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q3 Assertion & Reason Medium
##### ASSERTION

$1 mm^2 = 10^{-6} m^2$

##### REASON

The numerical value of physical quantity is less for a smaller unit.

• 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 Matrix Hard
Match List I with List II and select the correct answer using the codes given below the lists:
 Boltzmann Constant $[\mathrm{M}\mathrm{L}^{2}\mathrm{T}^{-1}]$ Coefficient of viscosity [$ML ^{-1}\mathrm{T}^{-1}$] Plank Constant $[\mathrm{M}\mathrm{L}\mathrm{T}^{-3}\mathrm{K}^{-1}]$ Thermal conductivity $[\mathrm{M}\mathrm{L}^{2}\mathrm{T}^{-2}\mathrm{K}^{-1}]$

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q5 Single Correct Medium
The term $(1/2)pv^{ 2 }$ occurs in Bernoulli's  equation , with $\beta$ being the density of fluid and V its speed . The dimensions of this term are
• A. $\left[ { M }^{ -1 }{ L }^{ 5 }{ T }^{ 2 } \right]$
• B. $\left[ { M }{ L }{ T }^{ 2 } \right]$
• C. $\left[ { M }{ L }^{ -1 }{ T }^{ -2 } \right]$
• D. $\left[ { M }^{ -1 }{ L }^{ 9 }{ T }^{ -2 } \right]$

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020