Advertisements
Advertisements
Question
Advertisements
Solution
If the zero of the one scale (vernier scale or circular scale of screw gauge) does not coincide with the zero of the main scale, this is known as zero scales, zero error arises. There are two types of zero error -
(a) If the zero of the scale remains below the line of graduation of the main scale then it is called positive zero error
(b) If the zero of the scale lies above the line of graduation of the main scale then it is called negative zero error
APPEARS IN
RELATED QUESTIONS
Name the instrument which can accurately measure the following
The diameter of a needle
Name the instrument which can accurately measure the following
The thickness of a paper
Name the instrument which can accurately measure the following.
The diameter of a pencil.
Radius of a thin wire is measured by ______.
Match the following.
| 1. | Screw gauge | Vegetables |
| 2. | Vernier caliper | Coins |
| 3. | Beam balance | Gold ornaments |
| 4. | Digital balance | Cricket ball |
How will you find the thickness of a one rupee coin?
The precision of the screw gauge is 0.001 cm.
Write about the positive zero error in the screw gauge instrument.
How will you find Zero errors in the screw gauge?
A screw gauge has pitch 1 mm and 100 circular divisions. Zero error = 8 divisions below. With a wire, 1st main scale is visible and 72nd circular division coincides. Find the wire’s radius.
