JEE Questions for Physics Units And Measurements Quiz 8

950 dyne = ............... newton

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100 picometer = ...............

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10–8 cm
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10–7 m
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If x meter is a unit of length then area of 1m² = ...............

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x
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x2
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x–2
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x–1

1 parsec = ...............

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Write the unit of surface tension in SI system.

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Find the distance at which 4 AU would subtend an angle of exactly 1 of arc. [IAU = 1.496 × 10¹¹ m, 1” = 4.85 × 10¹⁶ rad]

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If A = b⁴ the fractional error in A is ...............

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Physics-Units and Measurements-93376.png

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Physics-Units and Measurements-93381.png

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The length of a rod is (10.15 ± 0.cm what is the length of two such rods ?

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(20.30 ± 0.cm
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(20.30 ± 1.cm
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(10.30 ± 0.cm
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(20.30 ± 0.cm

Physics-Units and Measurements-93387.png

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The resistance of two resistance wires are R₁ (100 ± 5)Ω and R₂ (200 ± 7)Ω are connected in series. find the maximum absolute error in the equivalent resistance of the combination.

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35Ω
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12Ω
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4Ω
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9Ω

Physics-Units and Measurements-93392.png

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B
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C
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A
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D

The mass of substance is 75.5 gm and its volume is 25 cm². It’s density up to the correct significant figure is ...............

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3.02 gm/cm3
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3.200 gm/cm3
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3.25 gm/cm3
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3.1 gm/cm3

The area of a rectangle of size 1.25 × 2.245 cm in significant figure is ...............

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2.80625 cm2
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2.81 cm2
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2.806 cm2
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2.8062 cm2

If the length of rod A is (2.35 ± 0.cm and that of B is (5.68 ± 0.cm then the rod B is longer than rod A by ...............

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(2.43 ± 0.cm
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(3.33 ± 0.cm
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(2.43 ± 0.cm
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(2.43 ± 0.cm

Dimensional formula for power is ...............

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Dimensional formula for calories is ...............

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Dimensional formula for thermal conductivity (k) is

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Dimensional formula for Resistance (R) is ...............

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Dimensional formula for conductance is ...............

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Which physical quantity is represented by M^–1L^–3T^–3A²?

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Resistivity
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Resistance
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conductance
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conductivity

Which physical quantity is represented by M¹L¹T^–3A^–1?

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Stress
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Resistance
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Electric field
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potential Difference

Dimensions of impulse are.

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Dimensional formula for torque is

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Dimensional formula for capacitance (C)

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Dimensional formula for Boltzmann’s constant is ...............

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Dimensional formula for electromotive force (emf)

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Which physical quantity has dimensional formula as CR where C – capacitance and R – Resistance ?

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Frequency
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current
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Time period
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acceleration

Write the dimensional formula of the ratio of linear momentum to angular momentum.

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If L and R are respesented as the inductance and resistance respectively then the dimensional formula of R/L will be

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Write the dimensional formula of r.m.s (root mean square) speed.

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Physics-Units and Measurements-93449.png

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length
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velocity
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Area
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volume

The dimensional formula of magnetic flux is ...............

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Dimensional formula of CV ? where C – capacitance and V – potential different

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Find the dimensional formula for energy per unit surface area per unit time

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Physics-Units and Measurements-93463.png

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Which out of the following is dimensionally correct.

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p2 = hρg
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p = hρ2g
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p = hρg
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p = h2ρg

equation of l₁ = l₀[1 + α(T₂ – T₁)] find out the dimensions of the coefficient of linear expansion α suffix.

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Test if the following equation are dimensionally correct (S = surface tension ρ = density P = pressure v = volume n = coefficient of viscosity r = radius)

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all correct

Match list - I with list - II
Physics-Units and Measurements-93475.png

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b, d, c, a
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c, a, b, d
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b, d, a, c
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b, c, a, d

Match column – I with column – II
Physics-Units and Measurements-93476.png

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a, c, b, d
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c, a, d, b
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b, d, a, c
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b,c,a,d

Which of the following is not a unit of energy

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W – s
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kg – msec
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N – m
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Joule

Newton/metre² is the unit of

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Energy
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Momentum
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Force
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Pressure

The unit of self inductance of a coil is

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Farad
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Henry
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Weber
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Tesla

Erg – m^–1 can be the unit of measure for

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Force
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Momentum
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Power
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Acceleration

The unit of reactance is

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Ohm
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Volt
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Mho
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Newton

Which of the following is not the unit of time?

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Micro second
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Leap year
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Lunar month
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Parallactic second
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Solar day

Which physical quantities have the same dimension?

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Couple of force and work
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Force and power
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Latent heat and specific heat
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Work and power

The circular divisions of shown screw gauge are 50. It moves 0.5 mm on main scale in one rotation. The diameter of the ball is
Physics-Units and Measurements-93483.png

Physics-Units and Measurements-93483.png

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2.25 mm
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2.20 mm
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1.20 mm
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1.25 mm

JEE Questions for Physics Units And Measurements Quiz 8 - MCQExams.com

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Practice Physics Quiz Questions and Answers

JEE Questions for Physics Units And Measurements Quiz 8 - MCQExams.com

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Practice Physics Quiz Questions and Answers

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