Physics

# The dimensions of Hubble's constant are

$[T^{-1}]$

##### SOLUTION
Hubble's constant, $H=\dfrac {velocity}{distance}=\dfrac {[LT^{-1}]}{[L]}$
The Hubble Constant is the unit of measurement used to describe the expansion of the universe. You're just one step away

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

Q1 Multiple Correct Medium
The dimension $M{L^{ - 1}}{T^{ - 2}}$ may correspond to
• A. Work done by a force
• B. Linear momentum
• C. Pressure
• D. Energy per unit volume

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q2 Single Correct Medium
The frequency of vibration of a string is given by $v=\dfrac { p }{ 2l } \left[ \dfrac { F }{ m } \right] ^{ \frac { 1 }{ 2 } }$.
Here $p$ is the number of segments in which the string is divided, $F$ is the tension in the string and $l$ is its length. The dimensional formula for $m$ is:
• A. ${ M }^{ 0 }{ L }^{ 0 }{ T }^{ 0 }$
• B. ${ ML }^{ -1 }{ T }^{ 0 }$
• C. ${ ML }^{ 0 }{ T }^{ -1 }$
• D. ${ M }^{ 0 }{ LT }^{ -1 }$

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q3 Single Correct Medium
Choose the $wrong$ statement
• A. An quantities may be represented dimensionally in terms of the base quantities
• B. A base quantity cannot be represented dimensionally in terms of the rest of the base quantities
• C. The dimension of a base quantity in other base quantities is always zero
• D. The dimension of a derived quantity is never zero in any base quantity

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q4 Single Correct Medium
If $x=at+b{ t }^{ 2 }$ where $x$ is measured in $m$ and $t$ in $s$, then the dimension of $\left( { b }/{ a } \right)$ is:
• A. $[L{ T }^{ -2 }]$
• B. $[L{ T }^{ -1 }]$
• C. $[T]$
• D. $[{ T }^{ -1 }]$

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q5 Subjective Medium
If $mu=A+\frac { B }{ \lambda } +\frac { C }{ \lambda ^ 2 }$ then find dimensions of A,B and C respectively (A,B,C are constant) where $\lambda$ is wavelength of wave

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020