Write the numerical value of h and its unit

If the unit of length be doubled in a new system of units then, numerical value of h (plank's constant) becomes [E = hv]

A and B are the numerical values of a physical quantity and C and D are its units in two systems of mesurement . If C > D, then

A and B are the numerical values of a physical quantity and C and D are its units in two systems of mesurement . If C > D, then

If n is the numerical value of a physical quantity in the system in which its unit is u. then which of the following relations is correct?

If n is the numerical value of a physical quantity in the system in which its unit is u. then which of the following relations is correct?

The length of a rectangular varandah is 3 m more than its breadth. The numerical value of its area is equal to the numerical value of its perimeter. Taking x as the breadth of the varandah, write an equation in x that represents the above statement.