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Wave Optics — Physics STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 SciencePhysicsWave Optics1 Mark
Question

Assertion :  Television signals are received through sky-wave propagation.

Reason    : The ionosphere reflects electromagnetic waves of frequencies greater than a certain critical frequency.

(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.

(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.

(c) If assertion is true but reason is false.

(d) If the assertion and reason both are false.

✓

Answer

(d) If the assertion and reason both are false.

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