Physics

# Rate of energy dissipation is measured in

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Single Correct Medium Published on 18th 08, 2020
Questions 244531
Subjects 8
Chapters 125
Enrolled Students 198

#### Realted Questions

Q1 Single Correct Medium
The physical quantity having the dimensions $\displaystyle \left[ { M }^{ -1 }{ L }^{ -3 }{ T }^{ 3 }{ A }^{ 2 } \right]$ 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
The SI unit of inductance, henry can be written as:

a) $\dfrac{weber}{ampere}$  b)
$\dfrac{Volt-second}{ampere}$   c) $\dfrac{joule}{ampere^{2}}$  d) $Ohm-second$

• A. a & c are correct
• B. a & b are correct
• C. a, b & c are correct
• D. all are correct

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q3 Single Correct Medium
The dimensions of '$k$' in the relation $V = kavt$ is:
(Where '$V$' is the volume of a liquid passing through any point in time $t$, '$a$' is area of cross section, '$v$' is the velocity of the liquid)
• A. ${ M }^{ 1 }{ L }^{ 2 }{ T }^{ -1 }$
• B. ${ M }^{ 1 }{ L }^{ 1 }{ T }^{ -1 }$
• C. ${ M }^{ 0 }{ L }^{ 0 }{ T }^{ -1 }$
• D. ${ M }^{ 0 }{ L }^{ 0 }{ T }^{ 0 }$

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q4 Single Correct Medium
If $y$ represents pressure and $x$ represents velocity  gradient, then the dimensions of $\dfrac { { d }^{ 2 }y }{ d{ x }^{ 2 } }$ are
• A. $\left[ ML^{ -1 }T^{ -2 } \right]$
• B. $\left[ M^{2}L^{ -2 }T^{ -2 } \right]$
• C. $\left[ ML^{ -1 }T^{ 0 } \right]$
• D. $\left[ M^{2}L^{ -2 }T^{ -4 } \right]$

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q5 Subjective Medium
A given quantity has both magnitude and direction. Is it necessarily be a vector? Justify.

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020