This question has Statement $-1$ and Statement $-2$ . Of the four choices given after the statements, choose the one that best describes the two statements
Statement $-1$ : Sky wave signals are used for long distance radio communication. These signals are in general, less stable than ground wave signals
Statement $-2$ : The state of ionosphere varies from hour to hour, day to day and season to season
This question has Statement $-1$ and Statement $-2$ . Of the four choices given after the statements, choose the one that best describes the two statements
Statement $-1$ : Sky wave signals are used for long distance radio communication. These signals are in general, less stable than ground wave signals
Statement $-2$ : The state of ionosphere varies from hour to hour, day to day and season to season
- A
Statement $-1$ is true, Statement $-2$ is true and Statement $-2$ is not the correct explanation of Statement $-1$
- B
Statement $-1$ is false, Statement $-2$ is true
- C
Statement $-1$ is true, Statement $-2$ is false
- D
Statement $-1$ is true, Statement $-2$ is true and Statement $-2$ is the correct explanation of statement $-1$
Similar Questions
A point source of electromagnetic radiation has an average power output of $800\,W$ . The maximum value of electric field at a distance $3.5\,m$ from the source will be.....$V/m$
A point source of electromagnetic radiation has an average power output of $800\,W$ . The maximum value of electric field at a distance $3.5\,m$ from the source will be.....$V/m$
Magnetic field in a plane electromagnetic wave is given by
$\vec B = {B_0}\,\sin \,\left( {kx + \omega t} \right)\hat jT$
Expression for corresponding electric field will be Where $c$ is speed of light
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Expression for corresponding electric field will be Where $c$ is speed of light
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If the magnetic field in a plane electromagnetic wave is given by
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$\overrightarrow{\mathrm{B}}=3 \times 10^{-8} \sin \left(1.6 \times 10^{3} \mathrm{x}+48 \times 10^{10} \mathrm{t}\right) \hat{\mathrm{j}}\; \mathrm{T}$
then what will be expression for electric field?
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$\vec B = 1.6 \times {10^{ - 6}}\,\cos \,\left( {2 \times {{10}^7}z + 6 \times {{10}^{15}}t} \right)\left( {2\hat i + \hat j} \right)\frac{{Wb}}{{{m^2}}}$ The associated electric field will be
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