AP EAPCET 2024 - 19th May Evening Shift | Electromagnetic Waves Question 9 | Physics

An electromagnetic wave travel in a medium with a speed of $2 \times 10^8 \mathrm{~ms}^{-1}$. The relative permeability of the medium is 1 . Then, the relative permittivity is

1.75

2.28

2.75

AP EAPCET 2024 - 19th May Evening Shift

MCQ (Single Correct Answer)

-0

A message signal of 3 kHz is used to modulate a carric signal frequency 1 MHz , using amplitude modulation. The upper side band frequency and band width respectively are

1.003 MHz and 6 kHz

0.997 MHz and 6 kHz

1.003 MHz and 3 kHz

1.003 MHz and 2 MHz

AP EAPCET 2024 - 18th May Morning Shift

MCQ (Single Correct Answer)

-0

The solar radiation is

stationary wave

mechanical wave

transverse EM wave

longludinal EM wave

AP EAPCET 2022 - 5th July Morning Shift

MCQ (Single Correct Answer)

-0

The magnetic field in a plane electromagnetic wave is given as $$\mathbf{B}=\left(3 \times 10^{-7} \mathrm{~T}\right) \sin \left(3 \times 10^4 x+9 \times 10^{12} t\right) \hat{j}$$

The electric field of this wave is given as

$$90 \sin \left(3 \times 10^4 x+9 \times 10^{12} t\right) \hat{i} \mathrm{~Vm}^{-1}$$

$$90 \sin \left(3 \times 10^4 \mathrm{x}+9 \times 10^{12} t\right) \hat{\mathrm{k}} \mathrm{~Vm}^{-1}$$

$$45 \sin \left(3 \times 10^4 x+9 \times 10^{12} t\right) \hat{i} \mathrm{~Vm}^{-1}$$

$$45 \sin \left(3 \times 10^4 x+9 \times 10^{12} t\right) \hat{k} \mathrm{~Vm}^{-1}$$

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