The circle having the same center but with different radii is known as.

CONCENTRIC CIRCLES Circles having the same centre but with different radii are said to be concentric circles.

Fill in the blanks: All point lying inside/outside a circle are called ... points/ ... points. Circle having the same centre and different radii are called ... circles. A point whose distance from the centre of a circle is greater than its radius lies in .... of the circle. A continuous piece of a circle is .... of the circle. The longest chord of a circle is a ......of the circle. An arc is a ......... when its ends are the ends of a diameter. Segment of a circle is the region between an arc and ... of the circle. A circle divides the plane, on which it lies, in .... parts.

Circles having the same centre and different radii are called____circles.

Draw three concentric circles with different radii.

If different planets have the same density but diferent radii then the acceleration due to gravity (g) on the surface of the planet will depend on its radius (R) as

There are two organ pipes of the same length and the same material but of different radii. When they are emitting fundamental notes-

The atoms of different elements having same mass number but different atomic number are known as isobars. The sum of protons and neutrons, in the isobars is always different.

Elements of the same number but of different atomic number are known as ……….

Two planets have same density but different radii The acceleration due to gravity would be .