Q.An indifference curve cannot be horizontal as this implies that cons...
Indifference Curve and Horizontal Line
Indifference curve represents the various combinations of two goods that give equal satisfaction to the consumer. A horizontal indifference curve means that the consumer is indifferent between two combinations of goods. Let's see why an indifference curve cannot be horizontal.
Less of One Commodity and Same Amount of Another
If the indifference curve is horizontal, it means that the consumer is indifferent between consuming less of one commodity and the same amount of another commodity. This is not possible because if the consumer would consume less of one commodity, it would mean that the satisfaction derived from that commodity is less than the satisfaction derived from the other commodity. Hence, the consumer cannot be indifferent between the two.
More of One Commodity and Same Amount of Another
If the indifference curve is horizontal, it also means that the consumer is indifferent between consuming more of one commodity and the same amount of another commodity. This is not possible either because if the consumer would consume more of one commodity, it would mean that the satisfaction derived from that commodity is more than the satisfaction derived from the other commodity. Hence, the consumer cannot be indifferent between the two.
Greater Amount of Both the Commodities
If the indifference curve is horizontal, it also means that the consumer is indifferent between consuming a greater amount of both the commodities. This is not possible because the consumer always wants to maximize his satisfaction, and if he could get more of both the commodities, it would mean that he would be better off. Hence, the consumer cannot be indifferent between the two.
Conclusion
In conclusion, an indifference curve cannot be horizontal as it would mean that the consumer is indifferent between consuming less of one commodity and the same amount of another, more of one commodity and the same amount of another, and a greater amount of both the commodities. All of these situations are not possible as they violate the basic principles of consumer behavior and satisfaction.