Physics

# The absolute value of which of the following quantity of a substance cannot be determined?

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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
If $L, R, C$ and $V$ respectively represent inductance, resistance, capacitance and potential difference, then the dimensions of $\dfrac { L }{ RCV }$ are the same as those of:
• A. $Charge$
• B. $\dfrac { 1 }{ Charge }$
• C. $Current$
• D. $\dfrac { 1 }{ Current }$

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q2 Single Correct Medium
The S.I. unit of magnetic pole strength is_______
• A. $A.{ m }^{ 2 }$
• B. $A.{ m }^{ -1 }$
• C. A.m
• D. $A/{ m }^{ 2 }$

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q3 Single Correct Medium
If mass (M), velocity (V) and time (T) are taken as fundamental units, then the dimensions of force (F) are
• A. $[MVT]$
• B. $[MVT^{-1}]$
• C. $[M^2VT]$
• D. $[M^{-1}V^{-1}T]$

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q4 Single Correct Medium
Pressure depends on distance as  $p=\dfrac{\alpha }{\beta }exp\left ( \dfrac{-\alpha z}{k\theta } \right )$, where $\alpha, \beta$ are constants, $z$ is distance, $k$ is Boltzmann's constant and $\theta$ is temperature. The dimension of $\beta$ are:
• A. $\left [ M^{0} L^{0}T^{0}\right ]$
• B. $\left [ M^{-1} L^{-1}T^{-1}\right ]$
• C. $\left [ M^{0} L^{2}T^{0}\right ]$
• D. $\left [ M^{-1} L^{-1}T^{2}\right ]$

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q5 Subjective Medium
The distance of a galaxy is $56 \times10^{25}m$. Assume the speed of light to be $3\times10^8 m s^{-1}$. Express order of magnitude of time taken by light travelled to the galaxy.

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020