Question

If the soil temperature at 5 cm depth is \(20^{\circ}\mathrm{C}\) then what will be its value in degree Fahrenheit?

• A. \(52^{\circ}\mathrm{F}\)
• B. \(86^{\circ}\mathrm{F}\)
• C. \(68^{\circ}\mathrm{F}\)
• D. \(98^{\circ}\mathrm{F}\)

Hint:

Temperature conversion:
- \(^{\circ}\mathrm{F} = ^{\circ}\mathrm{C} \times 1.8 + 32\).
- \(^{\circ}\mathrm{C} = (^{\circ}\mathrm{F} - 32) / 1.8\).
- Remember: 0°C = 32°F, 100°C = 212°F.

Answer 1

The Correct Option is C

Step 1: Understanding the Question:
This question tests the conversion of temperature from Celsius to Fahrenheit.

Step 2: Key Formula or Approach:
The formula for converting Celsius to Fahrenheit is:
\[ ^{\circ}\mathrm{F} = \left( ^{\circ}\mathrm{C} \times \frac{9}{5} \right) + 32 \]

Step 3: Detailed Explanation:
Given: Temperature in Celsius = \(20^{\circ}\mathrm{C}\).
Using the formula:
\[ ^{\circ}\mathrm{F} = (20 \times \frac{9}{5}) + 32 \] \[ ^{\circ}\mathrm{F} = (20 \times 1.8) + 32 = 36 + 32 = 68^{\circ}\mathrm{F} \] Thus, the temperature is \(68^{\circ}\mathrm{F}\).
Final Answer:
Thus, \(20^{\circ}\mathrm{C}\) is equal to \(68^{\circ}\mathrm{F}\), which corresponds to option (C).
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