State whether the following statements are True (T) or False (F):
In Boolean algebra (A+A) = A.

State whether the following statements are True (T) or False (F): Boolean algebra is same as conventional algebra.

State whether the following statements are True (T) or False (F): Peak inverse voltage (PIV) is the maximum voltage across the diode when it is conducting.

State whether the following statements are True (T) or False (F): In a electric field two lines of forces never intersect.

State whether the following statements are True (T) or False (F): An electric line of force is the locus of the test charge.

State whether the following statements are True (T) or False (F): The nature of the lens changes when it is immersed in a medium whose refractive index is more than the refractive index of the material of the lens.

State whether the following statements are True (T) or False (F): An AND gate followed by a NOT gate gives rise to a NAND gate.

State whether the following statements are True (T) or False (F): The charge of a body may be 2 xx 10^19C .

State whether the following statements are True (T) or False (F): In the process of charging a body only electrons take active part.

State whether the following statements are True (T) or False (F): In parallel grouping of resistors the current through all the resistors is same.

State whether the following statements are True (T) or False (F): The power of a lens is 4D. The focal length is 50 cm.