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(d) 22.5 g
(c) 4.0 J/s
(c) 3 : 2
(c) 2 : 1
(b) 1.2 × 10⁻²
Steam at 100°C is passed into 20 g of water at 10°C, then water acquires a temperating of 80°C, the man of water present will be [Take specific heat of water = 1 cal g⁻¹°C⁻¹and Latent heat of steam = 540 cal g⁻¹]
(d) 22.5 g
(d) 22.5 g
See lessThe two ends of a metal rod are maintained at temperatures 100°C and 110°C. The rate of heat flow in the rod is found to be 4.0 J/s. If the ends are now maintained at temperatures 200°C and 210°C, the rate of flow of heat will be
(c) 4.0 J/s
(c) 4.0 J/s
See lessTwo rods of different materials having coefficients of thermal expansion α₁ , α₂ and Young’s Moduli Y₁, Y₂ respectively are fixed between two rigid massive walls. The rods are heated such that they undergo the same increase in temperature. There is no bending of the rods. If α₁ : α₂ = 2 : 3, the thermal stresses developed in the two rods are equal provided Y₁, Y₂ is equal to
(c) 3 : 2
(c) 3 : 2
See lessThe Young’s Modulus of steel is twice that of brass. Two wires of same length and of same area of cross-section; one of steel and another of brass are suspended from the same roof. If then the weights added to the steel and brass wires must be in the ratio of
(c) 2 : 1
(c) 2 : 1
See lessThe approximate depth of an ocean is 2700 m. The compressibility of water is 45.4×10⁻¹¹ Pa⁻¹ and density of water is 10³ kg/m³. What fractional compression of water will be obtained at the bottom of the ocean?
(b) 1.2 × 10⁻²
(b) 1.2 × 10⁻²
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