Assertion (A): | The energy of X-ray photons is greater than that of light photons. |
Reason (R): | X-ray photon in a vacuum travels faster than light photon. |
1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
3. | (A) is true but (R) is false. |
4. | Both (A) and (R) are false. |
Assertion (A): | For cooking in a microwave oven, food is always kept in metal containers. |
Reason (R): | The energy of the microwave is easily transferred to the food in a metal container. |
1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
3. | (A) is true but (R) is false. |
4. | Both (A) and (R) are false. |
Statement I: | Electromagnetic waves are radiated when a charged particle undergoes SHM. |
Statement II: | Electromagnetic waves propagate energy in the direction of the electric field of the wave. |
1. | Statement I is incorrect and Statement II is correct. |
2. | Both Statement I and Statement II are correct. |
3. | Both Statement I and Statement II are incorrect. |
4. | Statement I is correct and Statement II is incorrect. |
Assertion (A): | The energy of an electromagnetic wave is not equally distributed among the electric field and magnetic field. |
Reason (R): | \(E_0 ={B_0\over c}\), where c is the velocity of light. | The amplitude of electric field E0 and magnetic field B0 are related by the relation
1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
3. | (A) is true but (R) is false. |
4. | Both (A) and (R) are false. |
Assertion (A): | Displacement current can be produced by both AC and DC sources. |
Reason (R): | In a capacitor circuit, the conduction current in the circuit is equal to the displacement current inside the capacitor. |
1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
3. | (A) is true but (R) is false. |
4. | Both (A) and (R) are false. |
Assertion (A): | In an electromagnetic wave, the electric vibration and magnetic vibration are on two mutually perpendicular planes. |
Reason (R): | Phase difference between electric vibration and magnetic vibrations is 90° or 180°. |
1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
3. | (A) is true but (R) is false. |
4. | Both (A) and (R) are false. |
Statement I: | \(c=\frac{1}{\sqrt{\varepsilon_0\mu_0}}.\) | Electromagnetic waves propagate through all media with a speed
Statement II: | Electromagnetic waves can undergo reflection and refraction. |
1. | Statement I is incorrect and Statement II is correct. |
2. | Both Statement I and Statement II are correct. |
3. | Both Statement I and Statement II are incorrect. |
4. | Statement I is correct and Statement II is incorrect. |
Assertion (A): | Displacement current goes through the gap between the plates of a capacitor when the charge of the capacitor does not change. |
Reason (R): | The displacement current arises in the region in which the electric field and hence the electric flux does not change with time. |
1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. | (A) is True but (R) is False. |
4. | Both (A) and (R) are False. |