Advertisements
Advertisements
प्रश्न
Advertisements
उत्तर
In order to measure the length of an object using a metre rule, the metre rule must be placed with its marking close to the object, such that the zero marking on the scale coincides with one end of the object. Then the reading on the scale corresponding to the other end of the object will give the length of the object.
Precautions to be taken for measuring the length of the object, the eye must be kept vertically above the end of the object to avoid parallax and the corresponding marking along the line should be carefully read.
The meter scale can measure up to an accuracy of 1mm or 0.1 cm
APPEARS IN
संबंधित प्रश्न
When is a vernier Callipers said to be free from zero error?
Name the two scales of a vernier callipers and explain how it is used to measure length correct up to 0.01 cm.
(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.
When does a vernier callipers has the positive error?
State the formula for calculating the least count of screw.
What do you understand by the following term as applied to screw gauge?
Zero error
Find the volume of a book of length 25 cm, breadth 18 cm and height 2 cm in m3.
The Wavelength of a particular colour is 5400Å. Express it in nanometer and metre.
What is the least count in the case of the following instrument?
vernier calipers
In a vernier calipers, (N + 1) divisions of vernier scale coincide with N divisions of main scale. If 1 MSD represents 0.1 mm, the vernier constant (in cm) is ______.
