Exams › NEET › Physics

According to the principle of calorimetry, Heat lost = Heat gained. Find the total mass of water at 80°C.

1. mL + msΔθ = mₛwₛΔθ
2. m × 540 + m × 1 × (100 − 80)
3. 20 × 1 × (80 − 10)
4. m = 2.5 g

Correct answer: m = 2.5 g

Solution

The principle of calorimetry states that heat lost by a hot body is equal to the heat gained by a cold body. Based on the given options, the correct answer is D, as it directly provides the total mass of water at 80°C.

Related NEET Physics questions

• An instrument used to measure high temperature is
• Ocean currents are caused by the setting up of in water
• For the same mass, which one of the following has the maximum thermal capacity?
• The excess temperature of a body falls from \( 12^{\circ} \mathrm{C} \) to \( 6^{\circ} \mathrm{C} \) in 5 minutes, then the time to fall the excess temperature from \( 6^{\circ} \mathrm{C} \) to \( 3^{\circ} \mathrm{C} \) is (assume the Newton's cooling is valid)
• Bunty mixed 440 gm of ice at \( 0^{\circ} \mathrm{C} \) with \( 540 \mathrm{gm} \) of water at \( 80^{\circ} \mathrm{C} \) in a bowl. Then what would remain after sometime in the bowl?
• Mercury boils at \( 356^{\circ} \mathrm{C} \). However mercury thermometers are made such that they can measure temperatures up to \( 500^{\circ} \mathrm{C} \). This is done by :

⚔️ Practice NEET Physics free + battle 1v1 →