If the
zero of the vernier scale is to the
right of the main scale zero, there is a
positive zero error.
The zero correction is the opposite of the zero error to compensate for it. Hence, the
zero correction is negative.
A negative zero error occurs if zero on the vernier scale lies on the left side of zero on the main scale. If the error is negative, the correction is positive.
In interferometry, which phenomenon is primarily used to measure very small linear displacements with high precision?
What type of joint is depicted in the image given above?
Fill in the blank with the correct option.
Copper is ____ most useful Metal.
A metal rod is stretched, causing its length to increase from the original length L by ΔL. How is longitudinal strain determined when it is positive, indicating an increase in length?
