How does the mutual inductacne of a pair of coils get affected when
distance between coils is increased? Explain your answer in each case?

How does the mutual inductacne of a pair of coils get affected when the number of turns in each coil is decreased? Explain your answer in each case?

How does the mutual inductacne of a pair of coils get affected when a tahin iron sheet is placed between the two coils, other factors remaining the same?

How does the self inductance of an air coil change, when the number of turns in the coil is decreased?

How does the self inductance of an air coil change, when an iron rod is introduced in the coil?

What is the effect on interference pattern in Young's double slit experiment when separation between two slits is increased. Explain your answer in each case.

How does the force of gravitation between two objects change when the distance between them is reduced to half ?