Tag: measuring mass

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Questions Related to measuring mass

Multiple choice physics measurements and units measuring mass measurement of mass measuring instruments

Before using the beam balance why is the beam raised gently by raising the platform?

  1. To make one side of the beam balance heavy

  2. To ensure that the pointer swings equally on both sides of the zero mark on scale

  3. Both

  4. None
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Before using the balance, the plumb line is brought just above the pointed projection by adjusting the levelling screws at the base. The beam is then raised gently by raising platform $F$ using the lever and it is ensured that the pointer swings equally on both sides of the zero mark on scale, otherwise it is adjusted with the help of screw nuts. The beam is now lowered and the given object is placed on the left pan. The maximum approximate weight is placed on the right pan from the weight box with the help of forceps.

Then the lever is turned towards right so that the beam rises and the pointer begins to swing on either side. The side (left or right) to which the pointer moves more,

indicates less weight on that side. The standard weights are adjusted till the pointer either remains at the zero mark of scale or it swings equally on both sides of the zero mark. In this position, the total mass of weights on the right pan gives the mass of object.

Multiple choice physics measurements and units measuring mass measurement of mass measuring instruments

The beam should be _________ each time before adding or removing weights from the pan.

  1. raised

  2. lowered

  3. Both

  4. None
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The beam should be lowered each time before adding or removing weights from the pan. The weight should be replaced into the weight box after weighting. The lever should be turned gently, in order to prevent the knife edges from chipping.

Multiple choice physics measurements and units measuring mass measurement of mass measuring instruments

Which of the following is a correct about precautions to be taken while using beam balance?

  1. The weights should be carried with foreceps

  2. They should not be carried with bare fingers to avoid the change in its weight due to the presence of moisture and dust particles

  3. Wet and hot objects should not be kept on the pan

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Precaution taken while using beam balance. The weights should be carried with forceps. They should not be carried with bare fingers to avoid the change in its weight due to the presence of moisture and dust particles. Wet and hot objects should not be kept on the pan. When near the actual weight, the weights should always be tried in the descending order.

The beam should be lowered each time before adding or removing weights from the pan. The weight should be replaced into the weight box after weighing.

The lever should be turned gently, in order to prevent the knife edges from chipping.

Multiple choice physics measurements and units measuring mass measurement of mass measuring instruments

Which of the following is not correct precaution taken while using beam balance?

  1. When near the actual weight, the weights should always be tried in the descending order

  2. The beam should be lowered each time before adding or removing weights from the pan

  3. The weights should be replaced into the weight box after weighting

  4. None
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Precaution taken while using beam balance. The weights should be carried with forceps. They should not be carried with bare fingers to avoid the change in its weight due to the presence of moisture and dust particles. Wet and hot objects should not be kept on the pan. When near the actual weight, the weights should always be tried in the descending order.

The beam should be lowered each time before adding or removing weights from the pan. The weight should be replaced into the weight box after weighting.

The lever should be turned gently, in order to prevent the knife edges from chipping.

Multiple choice physics measurements and units measuring mass measurement of mass measuring instruments

Which of the following is/are correct condition(s) for a True Balance?

  1. Both arms must be of equal lengths

  2. Both pans must be of equal weights

  3. Both A and B

  4. None of A and B
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A balance to the true, must satisfy the following two conditions:
1. Both arms must be of equal lengths, and
2. Both pans must be of equal weights.

Multiple choice physics measurements and units measuring mass measurement of mass measuring instruments

The weights should be tried in descending order, for a beam balance, when we are :

  1. near the actual weight

  2. far from the actual weight

  3. measuring any weight as a constant practice

  4. making a rough estimation of the actual weight
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Using a beam balance, when we are near the actual weight, the weights should always be tried in the descending order.