4.4%.
6.1%.
2.4%.
9.8%.
Step 1: Understanding India's geographical area.
India has a total land area of approximately 3.28 million square kilometers, which constitutes about 2.4\% of the total geographical area of the world. The world's total land area is approximately 148.94 million square kilometers.
Step 2: Calculation of India's percentage.
The percentage of the world's area occupied by India is calculated as: \[ \text{Percentage} = \left( \frac{\text{India's land area}}{\text{World's total land area}} \right) \times 100 \]
\[ \text{Percentage} = \left( \frac{3.28}{148.94} \right) \times 100 \approx 2.4\%. \]
Step 3: Explanation of other options.
Option (A): Incorrect. 4.4\% is too high compared to India's actual land area proportion. Option (B): Incorrect. 6.1\% is significantly higher than the actual percentage. Option (D): Incorrect. 9.8\% is nearly four times India's actual proportion.
Step 4: Conclusion.
India occupies approximately 2.4\% of the world's total geographical area. \[ \therefore \text{The correct answer is: 2.4\%.} \]
Annealing process of PCR is performed at \(\_\_\_\) temperature.
Given, the function \( f(x) = \frac{a^x + a^{-x}}{2} \) (\( a > 2 \)), then \( f(x+y) + f(x-y) \) is equal to