Short Economics for short, and informative videos and images.
04/06/2026
Economies of scale
"Economies of scale refer to the cost advantages gained by a firm as it increases the scale of production. As output expands, the average cost per unit falls due to factors such as bulk purchasing of raw materials, efficient utilisation of resources, specialised labour, and lower transportation and administrative costs."
Opportunity cost
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Opportunity cost refers to the value of the next best alternative that is sacrificed when a choice is made. In economics, every decision involves giving up one option in order to gain another.
📘 Law of Demand & Its Exceptions
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The Law of Demand states that when the price of a product rises, the quantity demanded falls, and when the price falls, the quantity demanded rises, assuming other factors remain constant. This creates an inverse relationship between price and demand.
However, there are some exceptions where demand may rise even when price increases:
🔹 Giffen Goods – Basic necessities where higher prices may lead to more demand due to lack of cheaper alternatives.
🔹 Veblen Goods – Luxury products such as designer watches or premium cars, where high price itself attracts buyers.
🔹 Necessities – Essential goods like medicines or electricity are bought despite rising prices.
📈 Economics teaches us that while rules guide markets, real consumer behaviour can sometimes be different.
13/05/2026
✨Social norms
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Social norms are the unwritten rules, expectations, or behaviours that govern interactions within a society or group. They serve as informal guidelines for acceptable and unacceptable actions, shaping individual behaviour and fostering cooperation.🌟
11/05/2026
Collective Action Problem (Behavioural Economics - concept 1)
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The collective action problem refers to the difficulty that arises when individuals, acting in self-interest, fail to cooperate to achieve a socially optimal outcome. This problem is prevalent in situations where the benefits of a certain action are shared by all, but the costs are borne by individuals, leading to under-provision of the public good.
✨Behavioural Economics
Behavioural economics is a field of study that combines insights from psychology and economics to understand how people actually make decisions, often challenging the traditional economic assumption that individuals are fully rational, self-interested, and have unlimited cognitive abilities. It explores the psychological, emotional, cognitive, and social factors that influence decision-making and economic behaviour.✨
📉 Demand Curve
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When the price of a product falls, people usually buy more.
When the price rises, people tend to buy less.
This is called the Demand Curve in Economics. It slopes downward from left to right, showing the inverse relationship between price and quantity demanded.
A simple concept that explains everyday buying behaviour! 💡
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06/05/2026
The short-run cost curves of a firm
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This diagram shows the short-run cost curves of a firm in microeconomics, with output on the horizontal axis and costs on the vertical axis. The blue downward-sloping curve is Average Fixed Cost (AFC), which continuously falls as output increases because fixed costs are spread over more units of production. The Average Variable Cost (AVC) curve is U-shaped, falling at first due to increasing efficiency and later rising because of diminishing returns. The Average Total Cost (ATC) curve is also U-shaped and always lies above AVC, since ATC includes both variable and fixed costs. The vertical distance between ATC and AVC represents AFC, and this gap becomes smaller as output rises. The Marginal Cost (MC) curve is U-shaped and cuts both AVC and ATC at their minimum points. When MC is below AVC or ATC, it pulls those averages downward; when MC is above them, it pushes them upward. At output level Q1, AFC is relatively high because production is low, while at Q2 AFC becomes much lower due to higher output. Therefore, the diagram explains how costs behave in the short run as production expands.
04/05/2026
📈Indifference Curves📉
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Indifference Curves explain how consumers choose between two goods while maintaining the same level of satisfaction.
They are downward sloping, convex to the origin, and never intersect each other.
A higher indifference curve represents a greater level of consumer satisfaction and preference.
This concept, developed by J. R. Hicks and R. G. D. Allen, is a key part of modern consumer theory.
Understanding indifference curves helps students master choice, utility, and market behaviour in Microeconomics.
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