Science (English Medium) कक्षा १२ - CBSE Question Bank Solutions

Electric potential at a distance r from a point charges q is _________.

In a system of n point charges electric potential at a point P having a distance r_i from the charge q_i is ________.

According to Cartesian sign convention, all distances are measured from the _______.

Focal length of a mirror is given by ______.

According to the mirror equation, ______.

Atomic mass unit (u) is defined as ________ of the mass of the carbon (¹²C) atom.

Nuclear species or nuclides are shown by the notation ________ where X is the chemical symbol of the species.

\[\ce{^197_79Au}\] contains ______.

The nuclei of isotopes of a given element contain the same number of ______.

All nuclides with same mass number A are called ______.

Nuclides with same neutron number N but different atomic number Z are called ______.

A nucleus of mass number A has a radius R such that ______.

The total current in a semiconductor is ______.

The electric potential inside a conducting sphere ______.

Which of the following about potential at a point due to a given point charge is true?

The potential at a point P due to a given point charge ______.

A generator has an e.m.f. of 440 Volt and internal resistance of 4000 hm. Its terminals are connected to a load of 4000 ohm. The voltage across the load is ______.