nt nttA:Since ,matter cannot be concentrated at a point, therefore point charge is not possible.nt nttR:An electron is a point charge.nt nttnt nttExplain the assertion and reasonnn

Q. Assertion: An infinite number of lines can be drawn to pass through a given point.
Reason: A line segment has two end-points.
(a) Both Assertion and Reason are true and Reason is a correct explanation of Assertion.
(b) Both Assertion and Reason are true but Reason is not a correct explanation of Assertion.
(c) Assertion is true and Reason is false.
(d) Assertion is false and Reason is true.

Q. Assertion :Chemical properties are those properties which change the chemical nature of matter. Reason: Melting point is not a chemical property.

Q. Assertion :An independent negative charge moves itself from point A to point B. Then potential at A should be less than potential at B. Reason: While moving from A to B kinetic energy of electron will increase.

Q. Assertion :A spherical equipotential surface is not possible for a point charge. Reason: A spherical equipotential surface is possible inside a spherical capacitor.

Q. Assertion: Points A(6, 4), B(-4, -6) and C(4, 6) are such that AB =$\sqrt{200}$, BC= $\sqrt{208}$, AC= $\sqrt{8}$, Since AB+BC>AC, points A, B and C from a triangle.

Reason: If $B{C}^2=A{B}^2+A{C}^2$, then $\Delta ABC$ is a right triangle, right angled at A.