SSC
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The sensitivity of a liquid-in-glass thermometer can be increased by
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having a thick-walled bulb
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increasing the diameter of the column
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decreasing the size of the bulb
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increasing the length of the column
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Explanation:
Detailed explanation-1: -The correct answer is that a LARGER bulb will increase the sensitivity of the thermometer. A smaller bulb will react FASTER to a change in temperature because there is less ‘thermal mass’ which takes less time to warm up.
Detailed explanation-2: -The amount of mercury or alcohol that expands into the capillary tube depends on the volume of the bulb. The bigger the bulb, the more liquid forced into the capillary. This decreases the range, making the thermometer more sensitive to change in temperature.
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