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संबंधित प्रश्न
The wavelength of light of a particular colour is 5800 Å.
Express it in nanometre.
State one use of a screw gauge.
The least count of a vernier callipers is 0.01 cm and it has an error of + 0.07 cm. While measuring the radius of a sphere, the main scale reading is 2.90 cm and the 5th vernier scale division coincides with the main scale. Calculate the correct radius.
What is the need for measuring length with vernier callipers?
Figure shows a screw gauge in which circular scale has 200 divisions. Calculate the least count and radius of the wire.

The thimble of a screw gauge has 50 divisions for one rotation. The spindle advances 1 mm when the screw is turned through two rotations.
- What is the pitch of the screw?
- What is the least count of screw gauge?
- When the screw gauge is used to measure the diameter of wire the reading on the sleeve is found to be 0.5 mm and reading on thimble is found, 27 divisions. What is the diameter of the wire in centimetres?
How do you account for positive zero error for calculating the correct diameter of wires?
State whether the following statement is true or false by writing T/F against it.
The metre scale, vernier calipers, and screw gauge are in decreasing order of least count.
