Optics Question 73
Question: Assertion : Short wave bands are used for transmission of ratio waves to a large distance Reason : Short waves are reflected by ionosphere
[AIIMS 1994]
Options:
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.
E) If assertion is false but reason is true.
Show Answer
Answer:
Correct Answer: B
Solution:
Short wave (wavelength 30 km to 30 cm).
These waves are used for radio transmission and for general communication purpose to a longer distance from ionosphere.
