What are represented along the horizontal axis and vertical axis in drawing an ogive?

The vertical axis, in case of an ogive shows

What is the difference between visual axis and optic axis?

Form the differential equation representing the family of parabolas having vertex at origin and axis along positive direction of x-axis.

Write a linear equation representing a line which is parallel to y-axis and is at a distance of 2 units on the positive side of x-axis

What is the work done in moving a test charge q through a distance of 1 cm along the equational axis of an electric dipole?

A metallic disc of radius 10 cm is roatating uniforminty about a horizontal axis passing through its centre with angular velocity 10 revolution per second. A uniform magnetic field of intensity 10^-2 Tesla acts along the axis of the disc. Find the potential difference induced between the centre and the rim, of the disc.

A conducting rod AB is moving parallel to the positive x-axis. A magnetic field is acting along positive z-axis. The end A of the rod will get a higher potential with respect to the end B-state whether it is true or false?