D. FILL IN THE BLANKS
1. When the bulb of thermometer is warm..............in it expands and rises.
3. For accurate small to minute measurement of length............is used..
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The reason for rising of mercury is that it expands on heating, when we put the bulb of thermometer under our armpit the heat of our body is transfered to the bulb which is then transfered to mercury
Screw gauge can measure very small length of any object (thickness) in micrometers (using screw micrometer) accurately. Tapes can be used to measure length of clothes, plots and many more advantages with respect to measuring length. Metric ruler are generally used by students for measuring length in few centimeters or millimeters.
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2-100
4-10
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