Electromagnetic waves are transverse in nature is evident by
- polarisation
- interference
- reflection
- diffraction.
The Correct Option is A
Solution and Explanation
Top Questions on Electromagnetic waves
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- A parallel plate capacitor is charged by an ac source. Show that the sum of conduction current \( I_c \) and the displacement current \( I_d \) has the same value at all points of the circuit.
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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): Electromagnetic waves carry energy but not momentum.
Reason (R): Mass of a photon is zero. In the light of the above statements.
choose the most appropriate answer from the options given below:- JEE Main - 2025
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Identify the final product formed when Toluene undergoes a series of reactions with reagents given in the order:
(i) \( \text{Cl}_2 / \text{Sunlight} \)
(ii) \( \text{H}_2\text{O}/373 \, \text{K} \)
(iii) Acetophenone / \( \text{OH}^- \) at 293 K- COMEDK UGET - 2024
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4 statements are given below. Identify the incorrect statement:
(A) Phenol has lower \( pK_a \) value than \( \text{p} \)-cresol.
(B) 2-Chlorophenol is more acidic than phenol.
(C) Ortho and para nitrophenols can be separated by steam distillation since \( \text{p} \)-Nitrophenol is more steam volatile than \( o \)-Nitrophenol.
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Concepts Used:
Electromagnetic waves
The waves that are produced when an electric field comes into contact with a magnetic field are known as Electromagnetic Waves or EM waves. The constitution of an oscillating magnetic field and electric fields gives rise to electromagnetic waves.
Types of Electromagnetic Waves:
Electromagnetic waves can be grouped according to the direction of disturbance in them and according to the range of their frequency. Recall that a wave transfers energy from one point to another point in space. That means there are two things going on: the disturbance that defines a wave, and the propagation of wave. In this context the waves are grouped into the following two categories:
- Longitudinal waves: A wave is called a longitudinal wave when the disturbances in the wave are parallel to the direction of propagation of the wave. For example, sound waves are longitudinal waves because the change of pressure occurs parallel to the direction of wave propagation.
- Transverse waves: A wave is called a transverse wave when the disturbances in the wave are perpendicular (at right angles) to the direction of propagation of the wave.