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The figure shows the emission spectra recorded for three different light sources a, b and c using a spectrometer (note that the intensities are not to scale). Select the most appropriate statement regarding the identity of the source.

Options

  1. Aa: Blue LED, b: Incandescent bulb, and c: Atomic Hydrogen gas.
  2. Ba: Incandescent bulb, b: Blue LED, and c: Atomic Hydrogen gas .
  3. Ca: Atomic Hydrogen gas, b: Blue LED, and c: Incandescent bulb.
  4. Da: Blue LED, b: Atomic Hydrogen gas, and c: Incandescent bulb.

Correct answer

A. a: Blue LED, b: Incandescent bulb, and c: Atomic Hydrogen gas.

Step-by-step solution

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