Szu

**Concept:**

** **

Temperature can be expressed in three different units namely,

1. Degree Celcius

2. Kelvin

3. Fahrenheit

The S.I unit of temperature is Kelvin . One unit can be converted into another using proper conversion factor.

The conversion factor to convert temperature from degree Celsius to Kelvin is,

...... (1)

The conversion factor to convert temperature from Fahrenheit to degree Celsius is,

...... (2)

**Solution:**

**Step: 1 **The given temperature value is .

**Step: 2 **Substitute for in equation (2) to calculate the temperature in Celsius scale.

Therefore, 19 Fahrenheit in Celsius is .

**Common mistake:**

** **

Use the correct formula to calculate the temperature in Celsius scale.

**Similar problems:**

** **

**Question:**

** **

**1. What is 22 Fahrenheit in Celsius?**

** **

**Solution:**

**Step: 1** The given temperature value is .

**Step: 2 **Substitute for in equation (2) to calculate the temperature in Celsius scale.

Therefore, 22 Fahrenheit in Celsius is .

**Common mistake:**

** **

Use the correct formula to calculate the temperature in Celsius scale.

**Question:**

** **

**2. What is 34 Fahrenheit in Celsius?**

** **

**Solution:**

**Step: 1 **The given temperature value is .

**Step: 2 **Substitute for in equation (2) to calculate the temperature in Celsius scale.

Therefore, 34s Fahrenheit in Celsius is .

**Common mistake:**

** **

Use correct formula to calculate the temperature in Celsius scale.

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