Choose the correct statement.

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(D) The correct statement is given in option $(D)$.Analysis of options:Option $(A)$ is incorrect because photons have zero rest mass,yet they carry mo

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Electromagnetic force acts over large distances and does not need any intervening medium.

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(D) The correct statement is given in option $(D)$.Analysis of options:Option $(A)$ is incorrect because photons have zero rest mass,yet they carry momentum due to their energy $(p = E/c)$.Option $(B)$ is incorrect because the electromagnetic force is much stronger than the weak nuclear force.Option $(C)$ is incorrect because the strong nuclear force is responsible for the stability of nuclei,not the weak nuclear force.Option $(D)$ is correct because electromagnetic forces are long-range forces and do not require a material medium for propagation.

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$A$ plane electromagnetic wave with a frequency of $30 \text{ MHz}$ travels in free space. At a particular point in space and time,the electric field is $6 \text{ V/m}$. The magnetic field at this point will be $x \times 10^{-8} \text{ T}$. The value of $x$ is ..... .

Which of the following pairs of components can produce a plane electromagnetic wave propagating in a direction such that the electric field $\vec{E} = (E_x\hat{i} + E_y\hat{j} + E_z\hat{k})$ and magnetic field $\vec{B} = (B_x\hat{i} + B_y\hat{j} + B_z\hat{k})$ vary with position and time?

Which of the following statements is not correct?

Select the incorrect statement regarding electromagnetic waves.

The energy associated with the electric field is $(U_E)$ and with the magnetic field is $(U_B)$ for an electromagnetic wave in free space. Then

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