Physics

# The correct order in which the dimensions of "length" decreases in the following physical quantities isa) Coefficient of viscocity b) Thermal capacity c) Escape velocityd) Density

b, c, a, d

##### SOLUTION
a) Coefficient of viscosity $=\dfrac{MLT^{-2}\times L}{\left ( L^{2} \right )\left ( LT^{-2}\right )}=ML^{-1}T^{-3}$
b) Thermal capacity $=ML^{2}T^{-2}T^{-1}\rightarrow$(temperature)
c) Escape velocity
$=LT^{-2}$
d) Density $=ML^{-3}$
So, dimension of length in $b>c>a>d$.

You're just one step away

Single Correct Medium Published on 18th 08, 2020
Questions 244531
Subjects 8
Chapters 125
Enrolled Students 204

#### Realted Questions

Q1 Single Correct Medium
Out of the following the more precise value is .....
• A. $1.200 \times 10 ^ { 3 } k m$
• B. $1.20 \times 10 ^ { 3 } k m$
• C. $1.2 \times 10 ^ { 3 } k m$
• D. $1200 k m$

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q2 Single Correct Medium
If L is the inductance, R is the resistance and C is the capacitor, then which of the following does not represent the dimensional formula of time?
• A. $\left[\dfrac{L}{R}\right]$
• B. $[RC]$
• C. $\sqrt {LC}$
• D. $\dfrac{1}{\sqrt LC}$

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q3 Single Correct Medium
Two students P and Q perform an experiment to verify Ohm's law for a conductor with resistance R. They use a current source and a voltmeter with least counts of $0.1$mA and $0.1$mV, respectively. The plots of the variation of voltage drop(V) across R with current(i) for both are shown. the statement which is most likely to be correct is?
• A. P has only random error(s)
• B. Q has only systematic error(s)
• C. Q has both random and systematic errors
• D. P has both random and systematic errors

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q4 Subjective Medium
You are required to take out 200 ml of milk from a bucket full of milk. How will you do it?

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