Physics

Place the odd unit out.


ANSWER

joule second


SOLUTION
$$\left[ kilowatt \ hour \right] =\left[ watt \ second \right] =\left[ electron \ volt \right] =\left[ { M }^{ 1 }{ L }^{ 2 }{ T }^{ -2 } \right] $$ 
And they have the unit of energy while joule second is the odd one.
View Answers

You're just one step away

Create your Digital Resume For FREE on your name's sub domain "yourname.wcard.io". Register Here!


Single Correct Medium Published on 18th 08, 2020
Next Question
Questions 244531
Subjects 8
Chapters 125
Enrolled Students 199
Enroll Now For FREE

Realted Questions

Q1 Single Correct Medium
The equation which is dimensionally consistent in the following is:
(Where $${ S }_{ n } =$$ distance traveled by a body in $$n^{ th }$$ second, $$u$$ $$=$$ initial velocity, $$a$$ $$=$$ acceleration, $$T$$ $$=$$ time period, $$r$$ $$=$$ radius of the orbit, $$M$$ $$=$$ Mass of the sun, $$G$$$$=$$ universal gravitational constant, $$C$$ $$=$$ RMS velocity, $$P$$$$ =$$ pressure and $$d$$ $$=$$ density.)
  • A. $${ S }_{ n }=u+a\left( n-\frac { 1 }{ 2 } \right) $$
  • B. $$T=\sqrt { \dfrac { 4{ \pi }^{ 2 }{ r }^{ 3 } }{ GM } } $$
  • C. $$C=\sqrt { \dfrac { 3p }{ d } } $$
  • D. A, B, C

Asked in: Physics - Units and Measurement


1 Verified Answer | Published on 18th 08, 2020

View Answer
Q2 Single Correct Medium
In the relation $$y = r\sin (\omega t + kx)$$, the dimensional formula for $$kx$$ or $$\omega t$$ is same as
  • A. $$r/\omega$$
  • B. $$r / y$$
  • C. $$\omega t/ r$$
  • D. $$yr/ \omega t$$

Asked in: Physics - Units and Measurement


1 Verified Answer | Published on 18th 08, 2020

View Answer
Q3 Single Correct Medium
The refractive index ($$\mu$$) of glass is found to have the values $$1.49, 1.50, 1.52, 1.54\ and\ 1.48$$. Calculate absolute error is each measurement.
  • A. $$\displaystyle \Delta n_{5}= 1.51-1.48= +0.03$$
  • B. $$\displaystyle \Delta n_{4}= 1.51-1.54= -0.03$$
  • C. $$\displaystyle \Delta n_{3}= 1.51-1.52= -0.01$$
  • D. All of these

Asked in: Physics - Units and Measurement


1 Verified Answer | Published on 18th 08, 2020

View Answer
Q4 Subjective Hard
The potential energy of a particle varies the distance $$x$$ from a fixed origin as $$U = \dfrac{A \sqrt{x}}{x^2  + B}$$, where A and B are dimensional constants, then find the dimensional formula for AB.

Asked in: Physics - Units and Measurement


1 Verified Answer | Published on 18th 08, 2020

View Answer
Q5 Single Correct Medium
What is the value of $$1$$ fermi in $$m$$?
  • A. $$10^{-3}$$
  • B. $$10^{-6}$$
  • C. $$10^{15}$$
  • D. $$10^{-15}$$

Asked in: Physics - Units and Measurement


1 Verified Answer | Published on 18th 08, 2020

View Answer