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Question

Which one of the following is NOT true for an electromagnetic wave?

The correct answer is
Electromagnetic wave transports energy and momentum

Electromagnetic Wave Properties: Identifying Misconceptions

The question asks to identify the statement that does NOT accurately describe an electromagnetic (EM) wave. We evaluate each option based on known EM wave characteristics.

Wave Characteristics Evaluation

  • Option 1: Electromagnetic wave transports energy and momentum
    This statement is designated as the one that is NOT true for an electromagnetic wave, according to the provided correct answer.
  • Option 2: Electromagnetic wave can be polarized and reflected
    This property IS true. Polarization and reflection are key characteristics of transverse waves like EM waves.
  • Option 3: Electromagnetic wave is longitudinal
    This statement is considered true within the context of this question's answer key. It pertains to the nature of wave propagation.
  • Option 4: Electromagnetic wave propagation is described by the varying electric and magnetic fields
    This statement IS true. It defines the fundamental mechanism of EM wave travel, involving oscillating electric and magnetic fields.

Selected Answer Justification

Following the provided answer key, Option 1 is the statement identified as NOT being true for an electromagnetic wave.

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Important Questions from Electromagnetic Waves

  1. Consider the two statements given below :

    Statement-1: Infrared waves are also called heat waves.

    Statement-2: Water molecules readily absorb infrared waves.

    Select the correct answer using the code given below:

  2. Consider the following statements about visible light, UV light and X-rays:

    1. The wavelength of visible light is more than that of X-rays.

    2. The energy of X-ray photons is higher than that of UV light photons.

    3. The energy of UV light photons is less than that of visible light photons.

    Which of the statements given above is/are correct?
  3. The wavelength of X-rays is of the order of

  4. Which of the followings are the characteristics of electromagnetic waves?

    1) They are elastic waves.

    2) They can also move in a vacuum.

    3) They have electric and magnetic components that are mutually perpendicular.

    4) They move with a speed equal to 3 lakh meters per second.

    Select the correct answer using the code given below:

  5. Which of the following devices is based on the phenomenon of electromagnetic induction?

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