Exams › NEET › Physics

Water is poured into a pan and heated over a flame. After some time, the hot water begins rising to the top. Which type of heat transfer is involved in this?

1. conduction
2. convection
3. radiation
4. thermal expansion E. specific heat

Correct answer: convection

Solution

Convection is heat transfer by the movement of a fluid. In heated water, the warmer water becomes less dense and rises while cooler water sinks, creating circulating currents.

Related NEET Physics questions

• A hot liquid is kept in a big room. The logarithm of the numerical value of the temperature difference between the liquid and the room is plotted against time. The plot will be very nearly
• Which of the following statement regarding transformer is incorrect?
• Electric current flows through:
• A particle of mass \( m \) is made to move with uniform speed \( v \) along the perimeter of a regular hexagon. The magnitude of impulse applied at each corner is:
• According to Stoke's law, the viscous drag force, on an oil drop is proportional to:
• was the first to discover that lightning is electric discharge.

⚔️ Practice NEET Physics free + battle 1v1 →