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प्रश्न
A laboratory thermometer A is kept 7 cm away on the side of the flame while a similar thermometer B is kept 7 cm above the flame of a candle as shown in the following figure.
Which of the thermometers, A or B, will show a greater rise in temperature? Give reason for your answer.
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उत्तर
Thermometer B will show a greater rise in temperature because hot air rises up or air on the top of the candle flame is getting heated by convection.
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संबंधित प्रश्न
Describe a clinical thermometer. How does it differ from the thermometer used in laboratory?
Match the following
| i. | Clinical thermometer | A form of energy |
| ii. | Normal temperature of human body | 100°C |
| iii. | Heat | 37°C |
| iv. | Boiling point of water | 0°C |
| v. | Melting point of water | Kink |
Why do we use Mercury in thermometers? Can water be used instead of mercury? What are the problems in using it?
The thermometer which ranger from -10°C to 110°C is ______.
Digital thermometer is widely used for the measurement of the temperature due to ______.
Digital thermometers do not use ______.
All clinical thermometers have a ______ that prevents mercury from flowing back into the bulb.
Digital thermometers are mainly used to take body temperature.
Explain the construction and working of the clinical thermometer.
Figure (a–d) shows a student reading a doctor’s thermometer. Which of the figure indicates the correct method of reading temperature?
