JEE Main 2014 (Online) 9th April Morning Slot | Electromagnetic Waves Question 5 | Physics

JEE Main 2014 (Online) 9th April Morning Slot

MCQ (Single Correct Answer)

-1

Match List I (Wavelength range of electromagnetic spectrum) with List II. (Method of production of these waves) and select the correct option from the options given below the lists.

JEE Main 2014 (Online) 9th April Morning Slot Physics - Electromagnetic Waves Question 122 English

JEE Main 2014 (Online) 9th April Morning Slot Physics - Electromagnetic Waves Question 122 English

(a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)

(a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)

(a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)

(a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)

JEE Main 2015 (Online) 11th April Morning Slot

MCQ (Single Correct Answer)

-1

For plane electromagnetic waves propagating in the z direction, which one of the following combination gives the correct possible direction for $$\overrightarrow E $$ and $$\overrightarrow B $$ field respectively ?

$$\left( {\widehat i + 2\widehat j} \right)\,\,$$ and $$\left( {2\widehat i - \widehat j} \right)$$

$$\left(-\, {2\widehat i - 3\widehat j} \right)$$ and $$\left( {3\widehat i - 2\widehat j} \right)$$

$$\left( {2\widehat i + 3\widehat j} \right)$$ and $$\left( {\widehat i + 2\widehat j} \right)$$

$$\left( {3\widehat i + 4\widehat j} \right)$$ and $$\left( {4\widehat i - 3\widehat j} \right)$$

JEE Main 2015 (Online) 10th April Morning Slot

MCQ (Single Correct Answer)

-1

An electromagnetic wave travelling in the x-direction has frequency of 23 $$ \times $$ 10¹⁴ Hz and electric field amplitude of 27 Vm^$$-$$1. From the options given below, which one describes the magnetic field for this wave ?

$$\overrightarrow B $$ (x, t) = (3 $$ \times $$ 10^$$-$$8T) $$\widehat j$$

sin [ 2$$\pi $$ (1.5 $$ \times $$ 10^$$-$$8x $$-$$ 2 $$ \times $$ 10¹⁴t)]

$$\overrightarrow B $$ (x, t) = (9 $$ \times $$ 10^$$-$$8T) $$\widehat k$$

sin [ 2$$\pi $$ (1.5 $$ \times $$ 10^$$-$$6x $$-$$ 2 $$ \times $$ 10¹⁴t)]

$$\overrightarrow B $$ (x, t) = (9 $$ \times $$ 10^$$-$$8T) $$\widehat i$$

sin [ 2$$\pi $$ (1.5 $$ \times $$ 10^$$-$$8x $$-$$ 2 $$ \times $$ 10¹⁴t)]

$$\overrightarrow B $$ (x, t) = (9 $$ \times $$ 10^$$-$$8T) $$\widehat j$$

sin [(1.5 $$ \times $$ 10^$$-$$6 x $$-$$ 2 $$ \times $$ 10¹⁴t)]

JEE Main 2024 (Online) 9th April Evening Shift

MCQ (Single Correct Answer)

-1

The magnetic field in a plane electromagnetic wave is $$\mathrm{B}_{\mathrm{y}}=\left(3.5 \times 10^{-7}\right) \sin \left(1.5 \times 10^3 x+0.5 \times 10^{11} t\right) \mathrm{T}$$. The corresponding electric field will be :

$$E_z=105 \sin \left(1.5 \times 10^3 x+0.5 \times 10^{11} t\right) \mathrm{Vm}^{-1}$$

$$E_y=10.5 \sin \left(1.5 \times 10^3 x+0.5 \times 10^{11} t\right) \mathrm{Vm}^{-1}$$

$$E_y=1.17 \sin \left(1.5 \times 10^3 x+0.5 \times 10^{11} t\right) \mathrm{Vm}^{-1}$$

$$E_z=1.17 \sin \left(1.5 \times 10^3 x+0.5 \times 10^{11} t\right) \mathrm{Vm}^{-1}$$

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