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mcqs of
,
1 : Which is not a base unit in SI units?
1
:
Kilogram
2
:
Joule
3
:
Ampere
4
:
Kelvin
2 : S.I unit of intensity of light is
1
:
Ampere
2
:
Mole
3
:
Candela
4
:
Joule
3 : Which pair has same unit
1
:
Work and power
2
:
Momentum and impulse
3
:
Force and torque
4
:
Torque and power
4 : The ratio of 1 nanometer to 1 attometer is
1
:
10^9
2
:
10^8
3
:
10^-9
4
:
10^-12
5 : The percentage uncertainty in mass and velocity are 2% and 3%. The maximum uncertainty in the measurement of kinetic energy is
1
:
11%
2
:
8%
3
:
6%
4
:
1%
6 : One tera is equal to
1
:
10^12
2
:
10^9
3
:
10^-9
4
:
10^-12
7 : The dimensional formula for the quantity of light year is
1
:
[L]
2
:
[LT^-1]
3
:
[T]
4
:
[ML^2T^2]
8 : If V=5.3±0.1 volt. The percentage uncertainty of V^3 will be
1
:
2%
2
:
4%
3
:
6%
4
:
1%
9 : Dimension of coefficient of viscosity 'η' is
1
:
[ML^-1T^-1]
2
:
[ML^2T^-1]
3
:
[ML^-1T^-2]
4
:
[ML^-2T^-2]
10 : The sum 12 kg + 2.02 kg + 5.1 kg according to appropriate precision is
1
:
19.1 kg
2
:
19 kg
3
:
19.0 kg
4
:
19.12 kg
11 : The dimensions of acceleration due to gravity
1
:
[LT^-2]
2
:
[MLT^2]
3
:
[MLT]
4
:
[M^0Lr^2]
12 : The term 134.7 can be written in scientific notation as
1
:
1.347 × 10^2
2
:
1.347 × 10^3
3
:
1.347 × 10^1
4
:
1.347 × 10^4
13 : Which pair has same dimensions
1
:
Work and torque
2
:
Work and power
3
:
Momentum and Energy
4
:
Power and pressure
14 : The answer of the product (2.8723 × 1.6) to the appropriate number of significant figures is
1
:
4.6
2
:
4.59568
3
:
4.595
4
:
4.59
15 : The dimension of mc^2 is equal to
1
:
Energy
2
:
Force
3
:
Momentum
4
:
Torque
16 : The number of significant figures in the measured mass 2500.0 kg is
1
:
Five
2
:
Two
3
:
Three
4
:
Four
17 : For total assessment of uncertainty in the final result obtained by multiplication we add
1
:
Absolute uncertainty
2
:
Fractional uncertainty
3
:
Percentage uncertainty
4
:
Errors
18 : Absolute uncertainty in a measuring instrument is equal to
1
:
Least count
2
:
Accuracy
3
:
Fractional uncertainty
4
:
Percentage uncertainty
19 : The Purpose of study and discoveries in physics is
1
:
the betterment of mankind
2
:
the probing of interstellar spaces
3
:
the development of destructive technology in warfare
4
:
development in aesthetics for the world
20 : The numerical value of constants in any formula cannot be determined by dimensional analysis however it can be by
1
:
Experiments
2
:
Addition
3
:
Physical Quantities
4
:
Uncertainty
21 : Which one is the highest power multiple among the given?
1
:
Giga
2
:
Tera
3
:
Mega
4
:
Deca
22 : Identify which pair from the following does not have identical dimensions:
1
:
Work and torque
2
:
Angular momentum and Planck’s constant
3
:
Moment of inertia and moment of force
4
:
Impulse and momentum
23 : Show the reading when a solid cylinder is placed between the jaws. The length of the cylinder is:
1
:
3.26 cm
2
:
3.30 cm
3
:
3.34 cm
4
:
4.20 cm
24 : The estimated value of one year in seconds is:
1
:
5.2 × 10⁷
2
:
7.2 × 10⁶
3
:
3.2 × 10⁷
4
:
1.2 × 10⁸
25 : S.I unit of intensity of light is:
1
:
Ampere
2
:
Mole
3
:
Candela
4
:
Joule
26 : The answer to the mathematical division (45.2 ÷ 6.0) in appropriate number of significant figures is:
1
:
7.5
2
:
7.53
3
:
7.533
4
:
7.5333
27 : A measuring tape has been graduated with a minimum scale division of 0.2 cm. The allowed reading using this tape may be:
1
:
80.0 cm
2
:
80.6 cm
3
:
80.65 cm
4
:
80.7 cm
28 : Which equation is not dimensionally correct:
1
:
E = mc²
2
:
v = vi + at
3
:
S = v × t²
4
:
S = 1/2at²
29 : The same length is measured by meter rod, vernier caliper and screw gauge. Which one has less uncertainty?
1
:
Meter rod
2
:
Vernier calliper
3
:
Screw gauge
4
:
All have the same
30 : If the least count of balance is 100 kg, the number of significant figures in 8000 kg are:
1
:
4
2
:
3
3
:
2
4
:
1
31 : The least count of an instrument determines:
1
:
Precision of a measurement
2
:
Accuracy of a measurement
3
:
Fractional uncertainty of a measurement
4
:
Percentage uncertainty of a measurement
32 : The dimensions of universal gravitational constant is:
1
:
M
-2
L
2
T
-2
2
:
[ML³T⁻²]
3
:
[M⁻¹L³T⁻²]
4
:
[ML²T²]
33 : One Femto is equal to:
1
:
10⁻¹²
2
:
10⁻¹³
3
:
10⁻¹⁴
4
:
10⁻¹⁵
34 : Percentage uncertainty in area of a circle if uncertainty in radius is 3% is:
1
:
4%
2
:
6%
3
:
8%
4
:
9%
35 : The centripetal acceleration is proportional to rⁿ and vᵐ, the value of n is:
1
:
1
2
:
-1
3
:
2
4
:
-2
36 : The ratio of the dimensions of force and energy is:
1
:
T
2
:
T⁻¹
3
:
L⁻¹
4
:
L
Physics 11th MCQs || Ilam Ghar
Chapter 1 : Measurements
Physics 11th
