Let A,B be the centres of two cirlces of equal radii , draw them so that each one of them passes through the centres of the other .

Let A,B be the centres of two circles of equal radii,draw them so that each one of them passes through the centre of the other.Let them intersect at C and D.Examine therther bar AB and bar CD are at right angles.

With the same centre O ,draw two circles of radii 4 cm and 2.5 cm.

If two equal chords intersect each other, then the bisector of the angle between them pass through the centre.

Draw a line segment AB of length 8cm. Taking A as centre, draw a circle of radius 4cm and taking B as centre, draw another circle of radius 3cm. Construct tangents to each circle from the centre of the other circle.

In the following, give also the justification of the construction: Draw aline segment AB ol lengtb 8 cm. Taking A as centre,draw a circle of radius 4 cm and taking B as centre, draw another circle of radius 3 cm. Construct tangents to each circle from the centre of the other circle.

A charge q is placed at the centre of a cube of side l . What is the electric flux passing through two opposite faces of the cube?

Let veca, vecb, vecc be three vectors such that |veca| = 3, |vecb| = 4, |vecc| = 5 and each one of them being perpendicular to the sum of the other two, find |veca+vecb+vecc|

Two spheres of equal radius r are touching each other. The force of attra tion between them is proportional to

If the product of two whole numbers is 1,can we say that one or oth of them will be 1 ?Justify through examples.

Consider two cylindrical rods of identical dimensions, one of rubber and the other of steel. Both the rods are fixed rigidily at one end of the roof. A mass M is attached to each of the free ends aat the centre of the rods