Physics · 2024
NEET 2024 · 23 June · Code C1 · Q23
Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R. Assertion A: Houses made of concrete roofs…
Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: Houses made of concrete roofs overlaid with foam keep the room hotter during summer.
Reason R: The layer of foam insulation prohibits heat transfer, as it contains air pockets.
In the light of the above statements, choose the correct answer from the options given below.
Official answer
(2)
A is false but R is true.
More from Thermal Properties of Matter
- Certain quantity of water cools from 70°C to 60°C in the first 5 minutes and to 54°C in the next 5 minutes. The temperature of the surroundings is:2014
- A body cools from a temperature 3 T to 2 T in 10 minutes. The room temperature is T. Assume that Newton's law of cooling is applicable. The…2016
- The total radiant energy per unit area, normal to the direction of incidence, received at a distance R from the centre of a star of radius r, whose…2010
- A black body at 227°C radiates heat at the rate of 7 Cals / cm^2 s. At a temperature of 727°C, the rate of heat radiated in the same units will be:2009
- At 10°C the value of the density of a fixed mass of an ideal gas divided by its pressure is x. At 110^° C this ratio is:2008
- The power radiated by a black body is P and it radiates maximum energy at wavelength, λ_0. If the temperature of the black body is now changed so…2018
- Steam at 100°C is passed into 20 g of water at 10°C. When water acquires a temperature of 80°C, the mass of water present will be: [Take specific…2014
- A spherical black body with a radius of 12 cm radiates 450 watt power at 500 K. If the radius were halved and the temperature doubled, the power…2017
NEET (UG) 2024 Physics question, with the answer from NTA’s final answer key. Where our answers come from.