Question

Assertion :Space rockets are usually launched in the equatorial line from west to east. Reason: The acceleration due to gravity is minimum at the equator.

• A. STATEMENT-1 is True, STATEMENT-2 is True; STATEMENT-2 is a correct explanation for STATEMENT-1
• B. STATEMENT-1 is True, STATEMENT-2 is True; STATEMENT-2 is NOT a correct explanation for STATEMENT-1
• C. STATEMENT-1 is True, STATEMENT-2 is False
• D. STATEMENT-1 is False, STATEMENT-2 is True

Answer 1

The correct option is B STATEMENT-1 is True, STATEMENT-2 is True; STATEMENT-2 is NOT a correct explanation for STATEMENT-1

First statement is true and the reason is that since, the earth revolves from west to east so when the rocket is launched from west to east the relative velocity of rocket becomes velocity of rocket + velocity of earth. Thus, velocity of rocket increases which helps ti to rise without much consumption of fuel.
Second statement is also true and the reason is that radius of earth is highest at equator. As we know that $F\alpha \frac{1}{r^2}$, it is minimum at equator.
Therefore, both are true and second is not an explanation of first.