Beam Balance and Electronic Balance

Q.

What is the use of physical balance in measurements?

Q. A beam balance is shown in the figure. In order to balance the known mass of 9 gm, an equal mass of 9 gm should be kept on the other side to balance the beam. If 5 gm of mass is kept on the other side of the scale, how much more mass is needed to balance?

1. 5 gm
2. 4 gm
3. 2 gm
4. 9 gm

Q.

Difference between beam balance and electronic balance

Q. The figure shows a beam balance. A known mass of 1 kg is kept on the one side of the beam. Determine the unknown mass to the other side of the beam.

1. 2 kg
2. 1 kg
3. 3 kg
4. 4 kg

Q.

How is a mass of an object determined using a beam balance?

Q.

A _______ is used in a laboratory to measure the mass of an object precisely.

Q.

What are the applications of Archimedes' principle ?

1. It is used in designing of ship and submarines

2. In lactometers, to determine the purity of milk

3. In hydrometers to determine density of fluids

4. All of the above

Q. Mass measurement measures how much ______ is in object. ​

1. air
2. volume
3. matter
4. liquid