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Thermal Properties of Matter — JEE Main & Advanced NSEP PYQs

15 previous year questions from Thermal Properties of Matter with answers and solutions. Numbered list, year tags, and one-tap solutions — built for serious JEE / NEET practice.

15 questionsNSEPSolutions on every page
1

A small pond of depth 0.5 m deep is exposed to a cold winter with outside temperature of 263 K . Thermal conductivity of ice is K=2.2 Wm ⁻¹ ~K ⁻¹ , latent heat L=3.4 10^5 Jkg ⁻¹ an

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Two identical rods made of two different metals A and B with thermal conductivities K_ A and K_ B respectively are joined end to end. The free end of A is kept at a temperature T₁

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A steel cooking pan has copper coating at its bottom. The thickness of copper coating is half the thickness of steel bottom. The conductivity of copper is three times that of steel

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Two identical rooms in a house are connected by an open doorway. The temperatures in the two rooms are maintained at two different values. Therefore,

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A metallic wire of length l is held between two supports under some tension. The wire is cooled through ^ . Let Y be the Young's modulus, the density and the thermal coefficient of

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A sphere and a cube having equal surface area are made of the same material. The two are heated to the same temperature and kept in identical surrounding. The ratio of their initia

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Consider a composite slab consisting of two different materials having equal thickness and equal area of cross-section. The thermal conductivities are K and 2 K respectively. The e

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Plots of intensity (I) of radiation emitted by a black body versus wavelength ( ) at three different temperatures T ₁, ~T ₂ and T ₃ respectively are shown in figure. Choose the cor

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The temperature of an isolated black body falls from T₁ to T₂ in time t . Then, t=C x where x is

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Three containers A, B and C are filled with water at different temperature. When 1 litre of water from A is mixed with 2 litre of water from B , the resulting temperature of mixtur

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Solar constant for Earth is 2.0 cal per cm ^2 per minute. [1 cal =4.2 ~J ] . Angular diameter of the Sun (as seen from the Earth) is 1^ 2 (= half a degree). Treating Sun as a black

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A certain rod of uniform area of cross section A ( A =1.0 ~cm ^2 ) with its length =2 ~m is thermally insulated on its lateral surface. The thermal conductivity (K) of the material

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End A of a uniform thin rod of length 2 L is in boiling water (100^ C ) and end B is in melting ice (0^ C ) . P and Q are two points at distance L 2 from A and B respectively. A si

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Assuming the Sun to be a spherical body (radius R _ S ) of surface temperature T , the total radiation power received by Earth (radius R _ E ) at a distance r from Sun is

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The figure shows a lagged bar XY of non-uniform cross section. One end X of the bar is maintained at 100^ C and the other end Y at 0^ C . The variation of temperature along its len

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