Suppose the demand curve for a product is vertical and the supply curve is upward sloping.If a per-unit tax is imposed in the market for this product,

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When the demand curve for a product is vertical, it means that consumers are willing to pay a fixed (inflexible) price for the product, irrespective of the quantity of the product supplied. Therefore, when a tax is imposed, sellers cannot pass on the burden of the tax to consumers in the form of higher prices because the demand remains the same. As a result, sellers will decrease the quantity supplied of the product to maintain their profit margin, and the entire burden of the tax will fall on the buyers who will end up paying a higher price for the same quantity of the product. Hence, in this case, buyers bear the entire burden of the tax.

Suppose the Demand Curve for a Product Is Vertical and the Supply