It is observed that if two blankets of same thickness x are used together,will keep more warm as compared to a single blanket of thickness 2x. Why ?

Why are two thin blankets are warmer than a single blanket of double the thickness?

Why two thin blankets put together are warmer than one blanket of double the thickness ?

Two layers of a cloth of equal thickness provide warmer covering than a single layer of cloth with double the thickness. Why?

Two circular discs are of same thickness. The diameter of A is twice that of B . The moment of inertia of A as compared to that of B is

Assertion : The equivalent thermal conductivity of two plates of same thickness in contact (series) is less than the smaller value of thermal conductivity. Reason : For two plates of equal thickness in contact (series) the equivalent thermal conductivity is given by 1/K = 1/K_(1) + 1/K_(2)

Two models of a windowpane are made. In one model, two identical glass panes of thickness 3 mm are separated with an air gap of 3 mm. This composite system is fixed in the window of a room The other model consist of a single glass pane of thickness 3 mm, the temperature difference being the same as for the first model. the ratio of the heat flow fot the double pane to that for the single pane is ( K_("glass")=2.5 xx10^(-4)cal//s.m.^(@)C and K_("air")=6.2 xx10^(-6)cal//s.m.^(@)C ).

Two uniform plates of the same thickness and area but of different materials, one shaped like an isosceles triangle and the other shaped like a rectangle are joined together to form a composite body as shown in the figure. If the centre of mass of the composite body is located at the midpoint of their common side, the ratio between masses of the triangle to that of the rectangle is -

Assertion : Two thin blankets put together are warmer than a single blanket of double the thickness. Reason : Thickness increases because of air layer enclosed between the two blankets.