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प्रश्न
Answer the following in short.
Explain the working of a beam balance.
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उत्तर
A beam balance is the simplest instrument to measure mass (weight). In a beam balance, the mass of an object is measured by comparing it with standard masses called standard weights. A simple beam balance consists of a straight beam of metal (generally iron), supported at its centre with the help of an iron loop. A pointer is fixed at the centre of the iron loop. Two identical pans are suspended at equal distances from the centre, at the two ends of the beam.
Working: The object whose mass has to be measured is placed on one of the pans (generally the right pan). Standard weights are placed on the other pan until the metallic beam becomes hori7ontal and the pointer becomes vertical. The sum total of all weights used gives the mass of the object.
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संबंधित प्रश्न
Fill in the blank:
The ............ of an object is measured with the help of a beam balance.
Match the following column:
| Column A | Column B |
| (a) Length of a housing plot | (1) Clock |
| (b) Breadth of a book | (2) Beam balance |
| (c) Mass of an apple | (3) Thermometer |
| (d) Period of time for study | (4) Measuring tape |
| (e) Temperature of a body | (5) Graph paper |
| (f) Surface area of a leaf | (6) Metre ruler |
Define mass.
Answer the following in short.
What do you understand by the term ‘mass’? Name any one instrument used for weighing.
Tick the most appropriate answer.
Which of the following devices is used to measure mass?
Assertion(A): The scientifically correct expression is “ The mass of the bag is 10 kg”
Reason (R): In everyday life, we use the term weight instead of mass.
______ is used to measure mass.
Mass is a ______ quantity.
Write a short note on the following:
Digital balance
Write a short note on the following:
Spring balance:
