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Q.How is the wage rate determined in the perfectly competitive labour market? Explain with the help of diagram.

Wage rate determination in a perfectly competitive labour market
Figure
Uttarakhand UbseUttarakhand Board Intermediate (Commerce) 2026Subjective· 5mImportance★★★★★
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Equilibrium wage = where labour demand (based on marginal revenue product) meets labour supply.

On a diagram with the quantity of labour on the X-axis and the wage rate on the Y-axis: the Demand curve for labour is DOWNWARD SLOPING, derived from the Marginal Revenue Product of Labour (MRPL) — each firm hires labour up to the point where the wage equals MRPL, and since MRPL typically falls as more labour is hired (diminishing marginal returns), the demand curve for labour slopes down. The Supply curve of labour is UPWARD SLOPING — at a higher wage rate, more workers are willing to offer their labour (and existing workers may be willing to work more hours).

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