Fundamental And Derived Units - MCQs with answers

Fundamental And Derived Units - MCQs with answers

Q1. In the given options, the secondary fundamental unit is

A. Length
B. Luminous intensity
C. Plane angle
D. Time

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Q2. Plane angle and solid angle are

A. Primary fundamental units
B. Secondary fundamental units
C. Supplementary units
D. Derived units

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Q3. The unit of luminance is

A. Lumen
B. Candela per square meter
C. Lux
D. Lumen per square meter

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Q4. In electrostatic system of units, the unit of resistance is given by

A. [ε^-1L^-1T]

B. [ε^-2L^-1T^-1]

C. [ε^-1L^-1T^-2]

D. [ε^-1L^-2T]

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Q5. If V₀ is the velocity of light, μ₀ is the permeability of free space and ε₀ is the permittivity of free space, Then the equation for velocity in terms of permittivity and permeability is given by

A. V₀ = 1/√(μ₀ε₀)

B. V₀ = √μ₀ε₀

C. V₀ = μ₀ε₀

D. V₀ = 1/(μ₀ε₀)

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Q6. In MKS system of units, the dimensions of E.M.F is given by

A. [M^-1L^-1T^-2I^-1]

B. [ML²T^-3I^-1]

C. [M²L¹T^-2I^-1]

D. [M¹L^-1T^-2I^-1]

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Q7. The units for inductance and capacitance in terms of MKS units are[M¹L^-1T^-2I^-1], [M¹L^-1T^-2I^-1]

A. [M¹L^-1T^-2I^-1], [M^-1L^-4T^-2I^-2]

B. [M¹L^-2T^-2I^-1], [M¹L^-2T^-4I²]

C. [M¹L²T^-2I^-2], [M^-1L^-2T⁴I²]

D. [M^-1L²T^-2I^-1], [M¹L^-2T²I¹]

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Q8. By the surface, the solid angle subtended at the centre of a sphere, whose area is equal to the surface of the radius of the sphere is known as

A. Radian
B. Steradian
C. Candela
D. Lux

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Q9. At the centre, the plane angle subtended by an arc of a circle equal to the radius of the circle is known as

A. Steradian
B. Candela
C. Lumen
D. Radian

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Q10. For an ac series circuit, the resonant frequency is given by, f =1/2πL^aC^b. The values of a and b will be

A. 2, 2

B. 1/2, 1/2

C. -1/2, -1/2

D. -1/2,1/2

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Q11. If the energy stored in a parallel plate capacitor in terms of inductance and capacitance is given by, W = KC^aV^b where K is a constant, then the values of a and b are

A. 1, 1

B. 1, 2

C. 2, 1

D. 1/2, 2/3

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