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Q. The light coming from stars gives the idea of their ________

  • (A) Size
  • (B) Rotational speed
  • (C) Mass
  • (D) Temperature
  • Correct Answer - Option(D)
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  • Filed under category Geography
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Explanation by: Admin

The color and spectrum of starlight provide information about a star’s temperature.

Hot stars emit more blue light.

Cooler stars emit more red light.

The Wien’s displacement law helps determine a star's temperature based on its peak wavelength of emitted light.


Other options:

(A) Size → Determined using luminosity and distance.

(B) Rotational speed → Determined using Doppler shift in spectral lines.

(C) Mass → Determined using gravitational effects in binary star systems.

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