Physics: Measurement worksheet

Physics: Measurement worksheet.

You can find  MCQ(Multiple choice questions) or worksheet related to Measurement in Physics.
Check your knowledge by choosing a best answer among given four alternatives.
The correct answer is given at the bottom of the page.

Measurement worksheet:

1> The Fundamental units in MKS system are:

a> 3

b> 4

c> 6

d> 7

2> The fundamental units in S.I. system are:

a> 3

b> 6

c> 7

d> 9

3> The Latest standard of length is

a> Light Year.

b> Distance traveled by sound in air.

c> Distance traveled by light in vaccum.

d> Wavelength of orange light of KR 86.

4> The dimensional formula of impulse is:

a> $[MLT^{-2}]$

b>$[MLT^{-1}]$

c>$[ML^2T^{-1}]$

d>$[M^2LT^{-1}]$

5> The dimensional formula of torque is:

a> $[MLT^{-2}]$

b>$[ML^2T^{-2}]$

c>$[ML^{-1}T^{-2}]$

d>$[M^{-2}LT^{-2}]$

6> The dimensional formula of coefficient of viscosity  is:

a> $[ML^2T^{-2}]$

b>$[MLT^{-1}]$

c>$[ML^{-2}T^{-1}]$

d>$[ML^{-1}T^{-1}]$

7> The dimensional formula of angular velocity  is:
a> $[MLT^{-1}]$

b>$[ML^0T^{-2}]$

c>$[M^0L^0T^{-1}]$

d>$[M^0L^0T^0]$

8> The force on a sphere of radius “a” moving in  a medium with velocity v is given by $F=6\pi\eta rv$ the dimensions of $\eta$ are:

a> $[ML^{-1}T^{-1}]$

b>$[ML^0T^{-1}]$

c>$[MLT^{-2}]$

d>$[ML^{-3}T^0]$

9> Which of the following has the dimensions pressure:

a> $[ML^{-2}T^{-2}]$

b>$[ML^{-1}T^{-1}]$

c>$[MLT^{-2}]$

d>$[ML^{-1}T^{-2}]$

10> The position x of a particle at time t is given by:

$x=\frac{v_0}{a}(1-e^{-at})$

where $v_0$ is a constant and a >0. The dimensions of   $v_0$ and “a” are:

a> $[M^0LT^{-1}] and [T^{-1}]$

b>$[M^0LT^0] and [T^{-1}]$

c>$[M^0LT^{-1}] and [LT^{-2}]$

d>$[M^0LT^{-1}] and [T]$

11> The dimensions of impulse are equal to that of:

a> Force

b> Pressure

c> Angular momentum

d>Linear momentum

12> The dimensions of stress are:

a> $[M^0L^{-1}T^{-2}]$

b>$[ML^{-1}T^{-1}]$

c>$[ML^{-1}T^{-2}]$

d>$[MLT^2]$

13> the dimensions of strain are:

a>$[ML^0T]$

b>$[M^0L^0T^0]$

c>$[M^0L^0T]$

14> The dimensions of surface tension are:

a>$[MLT^{-2}]$

b>$[MT^{-2}]$

c>$[M^0L^0T^2]$

d>$[MT^2]$

15> The dimension of surface tension are same a that of:

a>Moment of inertia.

b>Force constant

c> Tension

4>Torque

16> The dimensions of Plank’s constant “h” are:

a>$[MLT^{-1}]$

b>$[ML^2T^{-1}]$

c>$[ML^2T^{-2}]$

d>$[ML^2T^{-3}]$

17> The dimensions of Plank’s constant “h” are same as that of:

a>Linear momentum

b>Energy

c>Angular momentum

d>Boltzmann’s  constant

18> The dimensions of volume of liquid flowing per second is:

a> $[L^3]$

b>$[L^3T^{-1}]$

c>$[L^3T]$

d>$[ML^3T^{-1}]$

19> The dimensions of mass flowing per second is:

a>$[L^3]$

b>$[M]$

c>$[MT]$

d>$[MT^-1]$

20> The dimensions of  Energy flowing per unit volume is:

a>$[ML^2T^{-2}]$

b>$[MLT^{-2}]$

c>$[ML^{-1}T^{-2}]$

d>$[ML^{-1}T^2]$

21>The equation of SHM is given by  y=A Sin Cx+B Cos Dt

the dimensions of the ratio of D:C are:

a>$[M^0L^0T^0]$

b>$[M^0LT^{-1}]$

c>$[M^0L^{-1}T]$

22> The dimensions of Heat Energy are:

a>$[MLT^{-2}]$

b>$[ML^2T^{-2}]$

c>$[ML^{-2}T^2]$

d>$[ML^2T^{-3}]$

23> The dimensions formula for modulus of rigidity is:

a>$[ML^{-1}T]$

b>$[MLT^{-2}]$

c>$[ML^3T^{-2}]$

d>$[ML^{-1}T^{-2}]$

24> The dimensional formula $[ML^2T^{-2}]$ represents:

a>The moment of force

b>Acceleration

c>Force

d>Angular momentum

25> Which os the following pairs of physics quantities have same dimensions:

a>Momentum and impulse

b>Linear velocity and angular velocotity

c>Linear momentum and angular momentum

d>Tension and Surface tension

26> The system os units developed in recent years recommended for wide us is:

a> C.G.S

b> F.P.S

c> M.K.S

d> S.I.

27> The statement that “The dimensional analysis can be used in deducing exact relationship between any number of physical quantities” is:

a> True

b>False

C> Uncertain

D> None of above

28> In S.I. system the Pascal is the unit of:

a>Surface tension

b>Surface energy

c>Viscosity

d>Pressure

29> In S.I. system watt multiplied by second is called:

a> Newton

b> Joule

c> Pascal

d> Joule/sec^2

30> The unit of energy is:

a> Watt

b> Newton

c> Kilowatt hour

d>Poise

31> Torr is unit of:

a> Pressure

b> Force

c> Surface tension

d> Viscocity

32> 1 Torr is equal to:

a> 1 atmoshphere

b> 1 bar

c> 1 mm of Hg

d> 1 cm of Hg

33> One micrometer is equal to:

a> 10^-4 m

b> 10^-6 m

c> 10^-8 m

d> 10^-10 m

34> 1 Fermi is equal to:

b> 10^-12 m

c> 10^-15 m

d> 10^-15 $\dot{A}$

35>The quantity which is not defined in terms of force per unit area is:

a> Pressure

b>Stress

c>Strain

d>Young’s modulus

36>The number of particles crossing a unit area perpendicular to x-axis in unit time is given by:

$n=-D\frac{n_2-n_2}{x_2-x_1}$

where, n1,n2 are the number of particles per unit volume at x=x1 and x=x2 respectively.

The dimensions of D called diffusion coefficient are:
a>$[L^2T^{-3}]$

b>$[LT^2]$

c>$[L^2T^{-2}]$

d>$[L^2T^{-1}]$

37> If e is electronic charge , h is Plank’s constant and c is speed of light then the quantity:

$\frac{1}{4\pi\varepsilon_0}\frac{e^2}{hc}$

the quantity has the dimension of:

a>Mass

b>length

c>Time

d>Dimensionless

38> In the relation:

$S_t = u+\frac{1}{2}a(2t-1)$

where St represents the distance traveled in t seconds , u is initial velocity , a is acceleration.

The dimensions of St are:

a> $[M^0L^0T^0]$

b>$[M^0LT^0]$

c>$[M^0LT^{-1}]$

d>$[M^0LT]$

39>The relation in Q.38 is:

a> Numerically correct only

b>Dimensionally correct only

c>Both numerically and dimensionally correct

d>Neither numerically nor dimensionally correct

40>The Bernoulli’s theorem may be expressed as:

$\frac{p}{d}+\frac{v^2}{2g}+h=C$

Where , p=pressure , d=density, v=velocity, g=acceleration due to gravity and h=height of liquid layer above horizontal ; The dimension of

constant C are:

a>$[L]$

b>$[LT^{-1}]$

c>$[M^0L^0T^0]$

d>$[ML^{-1}T^{-2}]$

41>The equation of state for real gas(Vander wall’s gas) is:

$\left(p+\frac{a}{v^2} \right)(V-b)=RT$

where p=pressure , V=volume

The dimensions of “a” are:

a>$[ML^5T^{-2}]$

b>$[ML^3T^{-1}]$

c>$[M^0L^6T^0]$

d>$[ML^7T^{-2}]$

42>In the equation in Q.41 , the dimension of “b” are:

a>$[LT^{-1}]$

b>$[L^3]$

c>$[L^{-3}]$

d>$[L^6]$

43> The force acting between two particles of masses m1 and m2 at separation r is given by:

$F=\frac{Gm1 m2}{r^2}$

46> 1 X-ray unit is:

a>10^-10 m

b>10^-12 m

c>10^-13 m

d>10^-15 m

47>If force F , acceleration A and time T are taken as fundamental physical quantities , The dimensions

of length L in this new system will be:

d>$[FAT^2]$

48>Which of the following is not a unit of time:

a>Lunar month

b>Leap year

c>Solar day

d>Light year

49>Which of the following is unit of distance:

a>Second

b>Parallactic  second

c>Watt

d>Pascal

50> Joule multiplied by second is the unit of:

a>Energy

b>Momentum

c>Angular momentum

d>Power

Answers to questions on worksheet:

1>a     2>c     3>c     4>b     5>b     6>d     7>c     8>a     9>d     10>a     11>d     12>c     13>c     14>b     15>b     16>b     17>c     18>b     19>d     20>c     21>b     22>b     23>d     24>a       25>a     26>d     27>b     28>d     29>b     30>c     31>a     32>c     33>b     34>c     35>c     36>d     37>d     38>c     39>c     40>a     41>a    42>b    43>b     44>a     45>d     46>c     47>c    48>d    49>b    50>c

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