Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
BITSAT2009PhysicsThermal Properties of MatterActual

A body of length 1 ~m having cross-sectional area 0.75 ~m ² has heat flow through it at the rate of 6000 Joule/sec. Then find the temperature difference if K =200 Jm ⁻¹ ~K ⁻¹

Options

  1. A20^ C
  2. B40^ C
  3. C80^ C
  4. D100^ C

Correct answer

B. 40^ C

Step-by-step solution

Q t = KA 6000= 200 0.75 1 = 6000 1 200 0.75 =40^ C

Practice Thermal Properties of Matter on Quantrex Academy →

More from Thermal Properties of Matter

A solid metallic cube having total surface area 24 ~m ^2 is uniformly heated. If its temperature is increased by 10^ C , calculate the increase in volume of the cube. ( . Given : . 2024A bowl filled with very hot soup cools from 98^ C to 86^ C in 2 minutes when the room temperature is 22^ C . How long it will take to cool from 75^ C to 69^ C ? 2023The two ends of a rod of length L and a uniform crosssectional area A are kept at two temperatures T₁ and T ₂ ( ~T ₁> T ₂ ) . The rate of heat transfer, dQ dt through the rod in a 2021A crystal has a coefficient of expansion 13 10⁻⁷ in one direction and 231 10⁻⁷ in every direction at right angles to it. Then the cubical coefficient of expansion is 2020Steam at 100 ° C is passed into 1 . 1 kg of water contained in a calorimoter of water equivalent to 0 . 2 kg at 15 ° C till the temperature of the calorimeter and its con 2018Three rods of identical cross-sectional area and made from the same metal, form the sides of an isosceles triangle A B C right angled at B as shown in figure. The point A and B are 2018If temperature of a black body increases from 300 K to 900 K , then the rate of energy radiation increases by 2017Two spheres of different materials one with double the radius and one-fourth wall thickness of the other are filled with ice. If the time taken for complete melting of ice in the l 2016 Full Thermal Properties of Matter list All BITSAT PYQs