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Physics · JEE | Electromagnetic Waves

हिन्दी

What is the detection method for ultraviolet radiation?

  1. A
    Receiver's aerials
  2. B
    Point contact diodes
  3. C
    Photocells and photographic film
  4. D
    Geiger tubes and ionisation chamber
View Answer & Solution

Correct answer · Option C

Photocells and photographic film

Explanation

Ultraviolet radiation is detected using photocells and photographic film.

Related questions

The speed of electromagnetic waves in a material medium of relative permittivity \( \varepsilon_r \) and relative permeability \( \mu_r \) is given by:→Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).\n Assertion (A): Stationary charges cannot be sources of electromagnetic waves.\n Reason (R): A stationary charge produces only a time-independent electric field and no magnetic field. \nIn the light of the above statements, choose the correct answer from the options given below:→Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).\n Assertion (A): Light can travel through a vacuum and material media, whereas sound waves cannot travel through a vacuum.\n Reason (R): Electromagnetic waves are longitudinal waves that require a material medium for propagation. \nIn the light of the above statements, choose the correct answer from the options given below:→In an electromagnetic wave, the ratio of the magnitude of the peak electric field \( E_0 \) to the peak magnetic field \( B_0 \) in free space is equal to:→
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