answer please according to class seventh
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3. When we have to measure temperature, bulb is touched with the surface. Bulb contains mercury or alcohol in it. Holding thermometer by bulb will cause mercury or alcohol to expand or contract, due to body temperature. Hence we will not obtain correct reading of temperature
4.
Kink in the Mercury thermometer helps to prevents the falling of mercury present in capillary tube into bulb. It ensures that the user takes the correct reading of temperature.
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karanbro52
5 minutes ago
Science
Primary School
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Answer please according to class seventh
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3. When we have to measure temperature, bulb is touched with the surface. Bulb contains mercury or alcohol in it. Holding thermometer by bulb will cause mercury or alcohol to expand or contract, due to body temperature. Hence we will not obtain correct reading of temperature
4.
Kink in the Mercury thermometer helps to prevents the falling of mercury present in capillary tube into bulb. It ensures that the user takes the correct reading of temperature.
Explanation: