TG EAMCET 4 May 2025 Shift 1 Paper

The faulty thermometer shows 49∘C.
To compare, let's first change 49∘C to Fahrenheit using the formula: F=(‌

9

5

×C)+32
So, F=(‌

9

5

×49)+32=88.2+32=120.2∘F
The correct Fahrenheit thermometer shows 122∘F.
The difference between the correct value and the faulty value is called the error: 122−120.2=1.8∘F.
We need to find out what this error in Fahrenheit means in Celsius.
Use the formula: F=‌

9

5

C+32. For a difference or correction, we use only the change part: ∆F=‌

9

5

∆C.
That means ∆C=∆F×‌

5

9

.
So, substitute the error: ∆C=1.8×‌

5

9

=1∘C
The faulty thermometer is 1∘C lower than it should be, so +1∘C should be added to its readings.