JEE Main 2019 (Online) 12th April Morning Slot | Units & Measurements Question 129 | Physics

Which of the following combinations has the dimension of electrical resistance ($$ \in $$₀is the permittivity of vacuum and $$\mu $$₀ is the permeability of vacuum)?

$$\sqrt {{{{ \in _0}} \over {{\mu _0}}}} $$

$${{{{ \in _0}} \over {{\mu _0}}}}$$

$$\sqrt {{{{\mu _0}} \over {{ \in _0}}}} $$

$${{{{\mu _0}} \over {{ \in _0}}}}$$

JEE Main 2019 (Online) 10th April Evening Slot

MCQ (Single Correct Answer)

-1

In the formula X = 5YZ² , X and Z have dimensions of capacitance and magnetic field, respectively. What are the dimensions of Y in SI units?

[M^–3L^–2T⁸A⁴]

[M^–2L^–2T⁶A³]

[M^–1L^–2T⁴A²]

[M^–2L⁰ T^–4A^–2]

JEE Main 2019 (Online) 9th April Evening Slot

MCQ (Single Correct Answer)

-1

The area of a square is 5.29 cm². The area of 7 such squares taking into account the significant figures is :-

37.0 cm²

37 cm²

37.030 cm²

37.03 cm²

JEE Main 2019 (Online) 9th April Morning Slot

MCQ (Single Correct Answer)

-1

In the density measurement of a cube, the mass and edge length are measured as (10.00 ± 0.10) kg and (0.10 ± 0.01) m, respectively. The error in the measurement of density is :

0.01 kg/m³

0.10 kg/m³

0.31 kg/m³

0.07 kg/m³

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