1
NEET 2025
MCQ (Single Correct Answer)
+4
-1
Change Language

The electric field in a plane electromagnetic wave is given by $$ E_z=60 \cos \left(5 x+1.5 \times 10^9 t\right) \mathrm{V} / \mathrm{m}$$ Then expression for the corresponding magnetic field is (here subscripts denote the direction of the field) :

A
$B z=60 \cos \left(5 x+1.5 \times 10^9 t\right) T$
B
$B_y=60 \sin \left(5 x+1.5 \times 10^9 t\right) T$
C
$B_y=2 \times 10^{-7} \cos \left(5 x+1.5 \times 10^9 t\right) T$
D
$B_x=2 \times 10^{-7} \cos \left(5 x+1.5 \times 10^9 t\right) T$
2
NEET 2024 (Re-Examination)
MCQ (Single Correct Answer)
+4
-1
Change Language

The electromagnetic radiation which has the smallest wavelength are

A
X-rays
B
Gamma rays
C
Ultraviolet rays
D
Microwaves
3
NEET 2024 (Re-Examination)
MCQ (Single Correct Answer)
+4
-1
Change Language

If the ratio of relative permeability and relative permittivity of a uniform medium is $$1: 4$$. The ratio of the magnitudes of electric field intensity $$(E)$$ to the magnetic field intensity $$(H)$$ of an EM wave propagating in that medium is (Given that $$\sqrt{\frac{\mu_0}{\varepsilon_0}}=120 \pi$$):

A
$$30 \pi: 1$$
B
$$1: 120 \pi$$
C
$$60 \pi: 1$$
D
$$120 \pi: 1$$
4
NEET 2024
MCQ (Single Correct Answer)
+4
-1
Change Language

The property which is not of an electromagnetic wave travelling in free space is that:

A
They are transverse in nature
B
The energy density in electric field is equal to energy density in magnetic field
C
They travel with a speed equal to $$\frac{1}{\sqrt{\mu_0 \varepsilon_0}}$$
D
They originate from charges moving with uniform speed
NEET Subjects
EXAM MAP