GDP and Welfare

Real GDP per capita is calculated as real GDP divided by population. Initially it is 500 ÷ 100 = 5. In the later period it is 550 ÷ 115 ≈ 4.78. Although total real GDP increased by 10%, population increased by 15%, so output per person declined. Therefore option B is correct; total GDP growth alone does not guarantee higher per-capita output.

Meaningful comparison across years requires separating changes in production quantities from changes in prices. Valuing each year’s output at common base-year prices removes the influence of changing prices and makes the resulting real GDP series more comparable. Thus option B is correct. Current prices measure nominal GDP, adding imports is conceptually wrong, and changing currencies does not solve the price-bias problem.

Real GDP isolates changes in production by valuing output at constant base-year prices. Thus, negative real GDP growth means that the quantity of final output decreased. Nominal GDP, however, reflects both quantities and current prices. If prices rise sufficiently, their increase can outweigh the fall in output, making nominal GDP grow. Therefore, a fall in output together with sufficiently higher prices makes option A possible and correct.

Real GDP is designed to measure the quantity of final goods and services produced, with the effect of price changes removed. Economic welfare is broader than production: it also depends on how income is distributed, unpaid household work, leisure, environmental quality, health and security. Thus option B is correct. Option C is false because constant prices are used, while D is false because final goods are included.

Real GDP per capita equals real GDP divided by population. If GDP stays at the same level while population becomes 1.04 times its original size, per-capita GDP becomes 1 ÷ 1.04 = 0.9615 of its former level. The decline is therefore about 3.85 percent, usually stated as 3.8 percent. It is not a 4 percent exact fall because the denominator changes multiplicatively.

Real GDP values current-year quantities at base-year prices, so it removes the effect of current price changes. For rice, the value is 40 units × ₹30 = ₹1,200. For milk, it is 20 units × ₹50 = ₹1,000. Adding the two values gives real GDP of ₹2,200. Therefore, option C is correct. Using current prices instead would calculate nominal GDP, not real GDP.

Real GDP measures the market value of final goods and services produced, adjusted for prices, but it is not a complete measure of welfare. A rise in GDP can coexist with greater income inequality, pollution, resource depletion, congestion, or stress. If the gains are concentrated and environmental costs increase, many people may be worse off even though measured real output rises. Therefore option A is the valid reason.

Real GDP measures current production using base-year prices, thereby removing the effect of current price changes. For the first good, the value is ₹8 × 100 = ₹800. For the second good, it is ₹15 × 40 = ₹600. Adding these values gives real GDP of ₹800 + ₹600 = ₹1,400. Current prices are not needed for this calculation, so option C is correct.

GDP mainly records market-valued final production. A free digital service may create substantial convenience, information, or enjoyment for users, but its zero price gives it little or no measured market value. Thus the benefit is under-recorded even though welfare rises. Option A is correct; the other choices describe effects that do not follow from a zero-priced service.

Reconstruction spending represents newly produced construction and repair services, so it can increase both nominal and real GDP. However, GDP does not subtract the destruction of homes, infrastructure, lives, security, and well-being caused by the disaster. Consequently, a higher GDP cannot prove that every social loss was compensated. Option B is correct; the other statements can be true accounting observations.

Real GDP values current-year quantities at base-year prices, thereby holding prices constant and isolating output changes. Wheat contributes 60 × ₹25 = ₹1,500, while cloth contributes 15 × ₹80 = ₹1,200. Adding them gives real GDP = ₹1,500 + ₹1,200 = ₹2,700. Therefore option C is correct. Using current prices would calculate nominal GDP, not real GDP.

Real GDP measures current production using base-year prices, thereby removing the effect of current price changes. For the first good, the value is ₹12 × 80 = ₹960. For the second, it is ₹25 × 24 = ₹600. Adding these values gives real GDP = ₹960 + ₹600 = ₹1,560. Hence option C is correct; using current prices or adding the inputs incorrectly would produce the other figures.

Real GDP measures the volume of final goods and services using constant prices, so it removes much of the effect of inflation. However, total real GDP does not show how output is distributed, how population has changed, or whether the average person is better off. Per-capita real GDP and distributional, social and environmental indicators are therefore needed. Option A is correct; the other statements contradict what GDP measures.

Per-capita real GDP equals total real GDP divided by population. With a 12% GDP increase and an 8% population increase, the ratio changes by (1.12 ÷ 1.08) − 1 = 0.037037, or about 3.7%. Thus A is correct. Subtracting the rates gives 4%, but that is only an approximation and not the exact ratio; 8% and 20% confuse population or combined growth with per-capita growth.

Real GDP is an indicator of market-valued production at constant prices, not a complete measure of welfare. Leisure has value, and a sharp loss of leisure may reduce well-being even when market output rises. Without information about the size of the leisure loss, distribution, health, environment and other factors, no definite welfare conclusion follows from real GDP alone. Thus C is correct; A and B are unjustified absolutes, while D is unrelated.

GDP records production that can generally be identified and valued through market transactions or reliable imputed prices. Unpaid cooking, cleaning or caregiving within a household may create real services, but they usually have no observed market price and are difficult to measure consistently. Consequently they are normally excluded from official real GDP, which can understate non-market production. A is correct; the services are not necessarily illegal, imported or non-final.

The GDP deflator is a broad price index for domestically produced final goods and services; it measures the relationship between nominal and real GDP. Economic welfare is wider than prices or output. It also depends on income distribution, leisure, environmental quality, health, safety, and the quality of public services. The deflator does not measure only population or imports and does not mechanically double output. Thus, option A is correct.

The GDP deflator is constructed from prices and quantities of measured domestic output. A free digital service can provide substantial convenience, information, or consumer surplus even when its recorded market price is zero. Because no conventional transaction price captures that benefit, the deflator and GDP statistics may fail to reflect its full value. Thus option A is correct; the other choices do not follow from a zero price.

The GDP deflator is a price index: it compares nominal GDP with real GDP to indicate changes in the prices of domestically produced final output. It does not measure how income is distributed, environmental damage, leisure, health, or the quality of life. Therefore option A best states its limited purpose. Options B and C incorrectly claim comprehensive welfare measurement, while D confuses a price index with a demographic measure.

A rise in the GDP deflator indicates that the average price of measured domestic final output has increased. It says nothing by itself about whether people are better off. If higher prices are associated with pollution, health risks, or environmental damage, welfare may even decline despite a higher measured price level. Hence option A is correct. The other statements are compatible with what a higher deflator can indicate.