State whether the following statements are True (T) or False (F):
The minimum distance between object and real image is zero in case concave mirror.

State whether the following statements are True (T) or False (F): The distance between object and real image if 4f where f is the focal length of a convex lens. The magnification is one.

What is the minimum distance between an object and its image in case of concave mirror?

State wheteher the following statements are True (T) or False (F): The minimum dielectric constant is one for air.

What is the minimum distance between object and real imiage in case of convex lens?

State whether the following statements are True (T) or False (F): A cell is a source of electrons.

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): Holes have phsyical existence like electrons.

State whether the following statements are True (T) or False (F): Electric field is a scalar field.

State whether the following statements are True (T) or False (F): The discharge equation of a cell is E=V - Ir.