1). In case of e_p∞ demand curve will be

2). Demand curve can be derived from

3). In case of demand curve, if lower segment is greater than upper segment, then e_p will be

4). At the mid point of the demand curve, e_p is equal to

5). In the calculation of elasticity , there is error in the case of

6). The exception to law of demand are

7). Demand for a product should have the following pre-requisite

8). Cross elasticity of demand between to perfect substitues will be

9). Percentage  change in demand is less than percentage change in price when

10). If demand curve is q₀ = 50 - P and P = 40, slope of the demand curve is