1
JEE Main 2020 (Online) 7th January Evening Slot
+4
-1
The dimension of $${{{B^2}} \over {2{\mu _0}}}$$, where B is magnetic field and $${{\mu _0}}$$ is the magnetic permeability of vacuum, is :
A
ML2T–2
B
MLT–2
C
ML-1T–2
D
ML2T–1
2
JEE Main 2019 (Online) 12th April Morning Slot
+4
-1
Which of the following combinations has the dimension of electrical resistance ($$\in$$0 is the permittivity of vacuum and $$\mu$$0 is the permeability of vacuum)?
A
$$\sqrt {{{{ \in _0}} \over {{\mu _0}}}}$$
B
$${{{{ \in _0}} \over {{\mu _0}}}}$$
C
$$\sqrt {{{{\mu _0}} \over {{ \in _0}}}}$$
D
$${{{{\mu _0}} \over {{ \in _0}}}}$$
3
JEE Main 2019 (Online) 10th April Evening Slot
+4
-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?
A
[M–3L–2T8A4]
B
[M–2L–2T6A3]
C
[M–1L–2T4A2]
D
[M–2L0 T–4A–2]
4
JEE Main 2019 (Online) 9th April Evening Slot
+4
-1
The area of a square is 5.29 cm2. The area of 7 such squares taking into account the significant figures is :-
A
37.0 cm2
B
37 cm2
C
37.030 cm2
D
37.03 cm2
EXAM MAP
Medical
NEET