Advertisements
Advertisements
प्रश्न
उत्तर
Two limitations of metre rule
(a). There comes an error of parallax due to the thickness of the metre rule.
(b). We cannot use metre rule for measuring small thickness.
APPEARS IN
संबंधित प्रश्न
Define the term 'Vernier constant'.
While measuring the length of a rod with a vernier callipers, below shows the position of its scales. What is the length of the rod?
(a) A vernier scale has 10 divisions. It slides over the main scale, whose pitch is 1.0 mm. If the number of divisions on the left hand of zero of the vernier scale on the main scale is 56 and the 8th vernier scale division coincides with the main scale, calculate the length in centimetres.
(b) If the above instrument has a negative error of 0.07 cm, calculate the corrected length.
What is the need for measuring length with vernier callipers?
When does a vernier callipers has the negative error?
What do you understand by the following term as applied to micrometre screw gauge?
Thimble
State the formula for calculating the pitch of screw.
How the backlash error is avoided?
