TG EAPCET 2024 (Online) 9th May Morning Shift | Electromagnetic Waves Question 7 | Physics

If the amplitude of the magnetic field part of a harmonic electromagnetic wave in vacuum is 270 nT , the amplitude of the electric field part of the wave is

$90 \mathrm{NC}^{-1}$

$81 \mathrm{NC}^{-1}$

$9 \mathrm{NC}^{-1}$

$30 \mathrm{NC}^{-1}$

TS EAMCET 2023 (Online) 14th May Evening Shift

MCQ (Single Correct Answer)

-0

Match the electromagnetic radiations given in List-I with their uses given in List-II

List-I		List-II
(A)	$X$-rays	(P)	Remote switches
(B)	UV-rays	(Q)	Finger prints in forensic Labs
(C)	Radiowaves	(R)	Crystal structure study
(D)	IR-rays	(S)	TV communication system

A-Q, B-R, C-P, D-S

A-R, B-Q, C-S, D-P

A-R, B-S, C-Q, D-P

A-S, B-R, C-Q, D-P

TS EAMCET 2023 (Online) 14th May Morning Shift

MCQ (Single Correct Answer)

-0

Electromagnetic radiation of intensity $0.6 \mathrm{Wm}^{-2}$ is falling on a black surface. The radiation pressure on the surface is

$2 \times 10^{-9} \mathrm{Nm}^{-2}$

$3 \times 10^{-9} \mathrm{Nm}^{-2}$

$4 \times 10^{-9} \mathrm{Nm}^{-2}$

$6 \times 10^{-9} \mathrm{Nm}^{-2}$

TS EAMCET 2023 (Online) 13th May Evening Shift

MCQ (Single Correct Answer)

-0

The speed of electromagnetic waves in a medium is $1.5 \times 10^8 \mathrm{~ms}^{-1}$. If relative permittivity of that medium is 2 , then its magnetic susceptibility is (speed of light in vacuum is $3 \times 10^8 \mathrm{~ms}^{-1}$ ).

-1.5

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