# If L,Q,R represent inductance, charge and resistance respectively, the units of  [This question includes concepts from 12th syllabus] 1. $\frac{QR}{L}$ will be those of current 2. $\frac{{Q}^{2}{R}^{3}}{{L}^{2}}$ will be those of energy 3. $\frac{QL}{R}$ will be those of current 4. $\frac{{Q}^{3}{R}^{2}}{L}$ will be those of power

Subtopic:  Dimensions |
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The quantity $\frac{1}{2}{\in }_{0}{E}^{2}$ has dimensional formula same as [This question includes concepts from 12th syllabus]

1. $\frac{1}{2}C{V}^{2}$

2. $\frac{1}{2}L{I}^{2}$

3.

4. Power

Subtopic:  Dimensions |
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A light-year is a unit of:

1. Time

2. Mass

3. Distance

4. Energy

Subtopic:  Measurement & Measuring Devices |
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The magnitude of any physical quantity:

 1 depends on the method of measurement. 2 does not depend on the method of measurement. 3 is more in the SI system than in the CGS system. 4 is directly proportional to the fundamental units of mass, length and time.

Subtopic:  Dimensions |
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Which of the following is not equal to watt ?

(1) Joule/second

(2) Ampere $×$ volt

(3) (Ampere)2 $×$ ohm

(4) Ampere/volt

Subtopic:  Dimensions |
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Newton–second is the unit of

(1) Velocity

(2) Angular momentum

(3) Momentum

(4) Energy

Subtopic:  Dimensions |
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Which of the following is not represented in correct unit

(1) $\frac{\text{Stress}}{\text{Strain}}=N\text{​}/\text{​}{m}^{2}$

(2) Surface tension = $N\text{​}/\text{​}m$

(3) Energy $=kg\text{​-​}m\text{​}/\text{​}\mathrm{sec}$

(4) Pressure $=N\text{​}/\text{​}{m}^{2}$

Subtopic:  Dimensions |
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One second is equal to :

(1) 1650763.73 time periods of $Kr$ clock

(2) 652189.63 time periods of $Kr$ clock

(3) 1650763.73 time periods of $Cs$ clock

(4) 9192631770 time periods of $Cs$ clock

Subtopic:  Dimensions |
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One nanometre is equal to:

(1) ${10}^{9}mm$

(2) ${10}^{-6}\text{\hspace{0.17em}}cm$

(3) ${10}^{-7}cm$

(4) ${10}^{-9}cm$

Subtopic:  Dimensions |
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A micron is related to centimetre as

(1) $1\text{\hspace{0.17em}}micron={10}^{-8}cm$

(2) $1\text{\hspace{0.17em}}micron={10}^{-6}cm$

(3) $1\text{\hspace{0.17em}}micron={10}^{-5}cm$

(4) $1\text{\hspace{0.17em}}micron={10}^{-4}\text{\hspace{0.17em}}cm$

Subtopic:  Dimensions |
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