What is sympodial axis?

What is mother axis?

What is spherical refracting surface? What do you mean by centre of curvature, radius of curvature, aperature and principal axis.

What points on y-axis is equidistant from the points (- 3, 4) and (7, 6).

What is the ordinate of every point on the x-axis

A point is on the x-axis. What are its y-coordinate and z-coordinates?

At what points on the curve x^2 +y^2 -2x-3= 0 , the tangent is parallel to y-axis?

Following is the con - version graph between kilometer and miles .The scale on x - axis represents unit length is equal to 2 miles and scale on y - axis represent 1 unit length is equal to 1.6 kilometers .Read the graph and answer the question . What is the scale taken on x- axis

Unpolarised light of intensity 32 W m^(-2) passes trough three polarisers,such that transmission axis of last polariser is crossed with the first.If intensity of ermerging light is 3W m^(_2) ,what is the angle between the transmission axis of the first two,polarisers?At what angle will the inensity of transmitted light be maximum?

A point lies on the x-axis at a distance of 7 units from the y-axis. What are its coordinates? What will be the coordinats if is lies on y-axis at a distance of -7 units form x-axis?