Discussion
Aman keeps a plastic bottle, a wooden spoon and a metallic spoon in a closed room overnight. The room temperature is 30 °C. In the morning he records the temperatures of the three objects as T1, T2 and T3. Which of the following most likely represents the relation between them ?
Answer: A
Most likely \(T_{1} = T_{2} = T_{3}\).
Left overnight in a closed room, every object exchanges heat with the air until it reaches thermal equilibrium, the same temperature as the room, 30 °C. The plastic bottle, the wooden spoon and the metal spoon therefore all end up at the same temperature.
The metal spoon feels colder to the touch than wood or plastic because metal is a good conductor and draws heat from the hand faster, not because it is at a lower temperature. The options with unequal temperatures confuse how hot an object feels with its actual temperature.
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development