Question:
A centigrade and Fahrenheit thermometer are dipped in boiling water. The water temperature is lowered until the Fahrenheit temperature observed is \(140^{\circ} \mathrm{F}\). At that time the temperature registered by the centigrade thermometer is
A centigrade and Fahrenheit thermometer are dipped in boiling water. The water temperature is lowered until the Fahrenheit temperature observed is \(140^{\circ} \mathrm{F}\). At that time the temperature registered by the centigrade thermometer is
Show Hint
Use C/5 = (F - 32)/9 to convert between the scales.
Updated On: Nov 13, 2026
- \(80^{\circ}\mathrm{C}\)
- \(60^{\circ}\mathrm{C}\)
- \(40^{\circ}\mathrm{C}\)
- \(20^{\circ}\mathrm{C}\)
Show Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept
The scales are related by \(\dfrac{C}{5}=\dfrac{F-32}{9}\).
Step 2: Substitute
\(\dfrac{C}{5}=\dfrac{140-32}{9}=\dfrac{108}{9}=12\)
Step 3: Result
\(C=60^{\circ}\text{C}\), option (B).
Final Answer:
The Celsius thermometer reads 60 degrees. \[ \boxed{\text{(B) }60^{\circ}\text{C}} \]
The scales are related by \(\dfrac{C}{5}=\dfrac{F-32}{9}\).
Step 2: Substitute
\(\dfrac{C}{5}=\dfrac{140-32}{9}=\dfrac{108}{9}=12\)
Step 3: Result
\(C=60^{\circ}\text{C}\), option (B).
Final Answer:
The Celsius thermometer reads 60 degrees. \[ \boxed{\text{(B) }60^{\circ}\text{C}} \]
Was this answer helpful?
0
0
Top MHT CET Physics Questions
- In non uniform circular motion, the ratio of tangential to radial acceleration is (r = radius of circle, $v =$ speed of the particle, $\alpha =$ angular acceleration)
- A particle moves along a circle of radius ?$r$? with constant tangential acceleration. If the velocity of the particle is ?$?$? at the end of second revolution, after the revolution has started then the tangential acceleration is
- If $M_z$ = magnetization of a paramagnetic sample, $B$ = external magnetic field, $T$ = absolute temperature, $C$ = curie constant then according to Curie�s law in magnetism, the correct relation is
- In a fundamental mode, the time required for the sound wave to reach upto the closed end of a pipe filled with air is $'t'$ second. The frequency of vibration of air column is
- In a parallel plate capacitor, the capacity increases if
View More Questions
Top MHT CET thermal properties of matter Questions
- For an opaque body coefficient of transmission is
- Newton's law of cooling holds good only, if the temperature difference between the body and the surroundings is
Two spheres ‘S1’ and ‘S2’ have same radii but temperatures are ‘T1’ and ‘T2’ respectively. Their emissive power is same and emissivity is in the ratio 1 : 4. Then the ratio ‘T1’ to‘T2’ is
The coefficient of linear expansion of brass and steel rod are ‘α1’ and ‘α2’ respectively. Lengths of brass and steel rods are ‘l1’ and‘l2’ respectively. If (l2 - l1) is maintained same at all temperatures, which one of the following relation is correct?
- A 200 g sample of water at 80°C is mixed with 100 g of water at 20°C. Assuming no heat loss to the surroundings, what is the final temperature of the mixture?
View More Questions
Top MHT CET Questions
- During r- DNA technology, which one of the following enzymes is used for cleaving DNA molecule ?
- In non uniform circular motion, the ratio of tangential to radial acceleration is (r = radius of circle, $v =$ speed of the particle, $\alpha =$ angular acceleration)
- The temperature of $32^{\circ}C$ is equivalent to
- The line $5x + y - 1 = 0$ coincides with one of the lines given by $5x^2 + xy - kx - 2y + 2 = 0 $ then the value of k is
- The heat of formation of water is $ 260\, kJ $ . How much $ H_2O $ is decomposed by $ 130\, kJ $ of heat ?
View More Questions