Short waves are reflected by the ionosphere.
A. Assertion and the reason are true and the reason is the correct explanation of the assertion.
B. Assertion and the reason are true and the reason is not the correct explanation of the assertion.
C. Assertion is true but reason is false
D. Assertion is false but reason is true.
Answer:A
Short waves are reflected by the ionosphere.
A. Assertion and the reason are true and the reason is the correct explanation of the assertion. B. Assertion and the reason are true and the reason is not the correct explanation of the assertion. C. Assertion is true but reason is false D. Assertion is false but reason is true.