UPHESC Assistant Professor Agricultural Economics 2025 PYQs

Concept: For any demand curve, $MR=P(1-\frac{1}{e})$ (Joan Robinson's formula, e taken as absolute value).

1. Divide both sides by P: $\frac{MR}{P}=1-\frac{1}{e}=\frac{e-1}{e}$ — option (C).
2. (A) drops the P that multiplies 1/e; (B) and (D) invert the ratio.
3. Check: e = 1 gives MR = 0 (TR maximum); e > 1 gives MR > 0.

Short trick: MR = AR(e − 1)/e; also AR = MR·e/(e − 1).

Concept: Sweezy's kinked demand curve: rivals do not follow a price rise but do follow a price cut.

1. If a firm raises price, rivals keep theirs, so it loses many customers — the segment above the kink is relatively elastic.
2. If it cuts price, rivals match the cut — the segment below the kink is relatively inelastic.
3. This produces a gap in the MR curve and explains price rigidity in oligopoly.

Short trick: Up = elastic (rivals ignore a rise), down = inelastic (rivals match a cut).

Concept: A. W. Phillips (1958) found an inverse relation between unemployment and the rate of change of money wages; Samuelson–Solow restated it as unemployment vs. inflation.

1. The curve relates a rate of change (inflation), not the price level — so (B) is wrong.
2. Lower unemployment ⇒ higher inflation (trade-off) in the short run.
3. Friedman–Phelps: in the long run the curve is vertical at the natural rate.

Short trick: Phillips = trade-off between unemployment and inflation.

Concept: Keynes: at a very low rate of interest people expect it to rise (bond prices to fall) and hold any extra money as idle balances.

1. The liquidity preference curve becomes horizontal (flat) at that minimum rate.
2. A horizontal curve has infinite (perfect) interest elasticity.
3. Monetary policy becomes ineffective — extra money cannot lower interest further.

Short trick: Trap = flat LM/LP curve = elasticity ∞.

Concept: Fix the sure pairs first.

1. Liquidity trap → Keynes (3); Life-cycle hypothesis → Modigliani (with Ando, Brumberg) (1).
2. Ratchet effect (consumption does not fall back with income) → Duesenberry's relative income hypothesis (4).
3. Money illusion is left for Pigou (2) — only code (A) = 2, 3, 1, 4 fits.

Short trick: Keynes–trap, Modigliani–life cycle, Duesenberry–ratchet.

Concept: Substitutes have positive cross elasticity: demand for X moves in the same direction as the price of its substitute.

1. Substitute becomes cheaper ⇒ consumers shift to it.
2. So the demand curve of X shifts to the left — demand for X decreases.
3. (For complements the effect would be the opposite.)

Short trick: Tea–coffee: coffee cheaper ⇒ less tea demanded.

Concept: Technical progress means the same output can be produced with fewer inputs.

1. So the isoquant for a given output moves inward, toward the origin (downward).
2. Its shape may change (labour- or capital-saving bias), but it does not become a straight horizontal/vertical line.
3. Upward shift would mean more inputs for the same output — technical regress.

Short trick: Better technology ⇒ isoquant shifts toward origin.

Concept: Capital account records changes in assets and liabilities (stocks); income flows go to the current account.

1. Capital account (India): foreign investment (FDI, FPI), external assistance, commercial borrowings, NRI deposits, etc.
2. Investment income (interest, dividends, profits) is a primary-income item of the current account (invisibles).
3. Hence investment income is not in the capital account.

Short trick: Principal = capital account; its return (income) = current account.

Concept: Keynes: $L=L_1(Y)+L_2(r)$.

1. $L_1$ — transactions and precautionary balances — depends on income and is interest-inelastic.
2. $L_2$ — speculative balances — varies inversely with the rate of interest.
3. So interest changes do not affect money held for both transaction and precautionary motives.

Short trick: T + P depend on Y; only S depends on r.

Concept: Price leadership is a form of tacit collusion among a few interdependent sellers.

1. A dominant (or low-cost / barometric) firm sets the price and smaller rivals follow.
2. Monopoly has no rivals to lead; perfect competition has price-takers; monopolistic competition has many small firms.
3. It therefore occurs in oligopoly.

Short trick: Leader–follower pricing needs a few interdependent firms ⇒ oligopoly.

Concept: Recall the launch years.

1. Rashtriya Gokul Mission — December 2014.
2. PM Krishi Sinchayee Yojana — July 2015 (‘Har Khet Ko Pani’).
3. PM Fasal Bima Yojana — approved January 2016, from Kharif 2016.
4. PM-KISAN — February 2019 (₹6,000 a year). Order: II, IV, III, I.

Short trick: Gokul 2014 → Sinchayee 2015 → Fasal Bima 2016 → Kisan 2019.

Concept: Several types of dualism are linked with different economists.

1. Social dualism — J. H. Boeke.
2. Technological dualism — Benjamin Higgins.
3. Financial dualism (organised vs. unorganised money markets with very different interest rates) — Hla Myint.
4. Harrod is known for the growth model, not dualism.

Short trick: Boeke–social, Higgins–technological, Myint–financial.

Concept: Disguised unemployment: more people are engaged in a work than needed, so withdrawing some does not reduce output.

1. If output does not fall when a worker is removed, that worker's marginal product is zero.
2. Typical of family farms in agriculture (Nurkse, Lewis).
3. Low productivity alone (D) or lack of alternatives (B) do not define it.

Short trick: Disguised unemployment ⇔ MP of labour = 0.

Concept: R. R. Nelson (1956): at low per-capita income, any rise in income raises population growth faster, pulling income back to subsistence.

1. Assertion is correct — the economy is trapped in a stable low-income equilibrium.
2. In the trap, population growth exceeds income growth (beyond the subsistence point), not lower.
3. So R is false; a ‘critical minimum effort’ (Leibenstein) is needed to escape.

Short trick: Trap = population races ahead of income.

Concept: PQLI was developed by Morris David Morris (1979) for the Overseas Development Council.

1. It averages three indicators: infant mortality, life expectancy at age one, and basic literacy (each scaled 0–100).
2. Meghnad Desai worked with UNDP on HDI; Nurkse – vicious circle; Hirschman – unbalanced growth.

Short trick: PQLI = Morris; 3 indicators: IMR, life expectancy, literacy.

Concept: W. W. Rostow (1960) gave five stages of economic growth.

1. 1 Traditional society → 2 Pre-conditions for take-off → 3 Take-off → 4 Drive to maturity → 5 Age of high mass consumption.
2. So the third stage is the take-off (investment rising to over 10% of national income).

Short trick: T-P-T-D-H: Traditional, Pre-conditions, Take-off, Drive, High consumption.

Concept: NSSO consumer expenditure surveys measure Monthly Per Capita (consumption) Expenditure.

1. Poverty lines (Lakdawala, Tendulkar, Rangarajan) are expressed as MPCE in rupees.
2. E.g., Tendulkar 2011-12: ₹816 rural and ₹1,000 urban MPCE.
3. Households below the MPCE cut-off are counted as poor.

Short trick: MPCE = Monthly Per Capita Expenditure.

Concept: Planning Commission classification by culturable command area (CCA).

1. Minor: CCA up to 2,000 ha → 1,800 ha (2).
2. Medium: 2,000–10,000 ha → 9,000 ha (3).
3. Major: above 10,000 ha → 12,000 ha (1). Code 2, 3, 1 = (C).

Short trick: 2,000 and 10,000 ha are the two cut-offs.

Concept: Competitive advantage is whatever distinguishes a firm from rivals and lets it earn superior returns (Porter: cost leadership or differentiation).

1. Efficiency, strengths or intangible resources may be sources of advantage, but only if they set the firm apart.
2. A strength shared by all rivals gives no advantage.
3. Hence ‘what sets an organisation apart’ is the best description.

Short trick: Advantage = difference from rivals that customers value.

Concept: EKC (Grossman–Krueger, 1991) plots environmental degradation against per-capita income.

1. At low incomes, growth raises pollution; after a turning point, richer societies demand and afford cleaner technology, so pollution falls.
2. Rise then fall ⇒ inverted-U.
3. It borrows the shape of Kuznets' original income-inequality curve.

Short trick: Kuznets curves (inequality or pollution) are inverted-U.