100+ Measurement Questions and Answers Pdf - 1

Question: 1

What is called seconds pendulum?

The oscillation of a simple pendulum of length 100 cm will be two seconds. Such a pendulum is called seconds pendulum.

Question: 2

Define radian?

Radian is the plane angle subtended by an arc of length equal to radius at the centre of the circle.

Question: 3

What is steradian?

Steradian is the solid angle subtended by an area r² of a spherical surface at the centre of a sphere of radius ‘r’.

Question: 4

What are the types of errors?

Positive errors – If the zero of the vernier scale is on the right of the zero of the main scale when two jaws are in contact.

Negative errors – If the zero of the Vernier scale is on the left of the zero of the main scale when two jaws are in contact.

Question: 5

What is the need for measurement?

It forms the basis for the study of different branches of Physics.

It leads to accurate measurement of Physical Quantities.