An object is situated 40 cm from a convex mirror. when a plane mirror is inserted between an object and a concave mirror at a distance 32 cm from the object the images in the two mirrors coincide what is the radius of curvature of the convex mirror.

specific latent heat of fusion, lf, of a substance is defined as the amount of heat required to change a unit mass of the substance from solid to liquid state, without any change in the temperature.

explanation:

.) the observation by semmelweis that more mothers died of childbed fever when their doctors also worked in the morgue

answer: the exterior temperature of commercial jet planes as they leave the stratosphere and return to the ground increases steadily.

explanation:

the lower most layer of atmosphere is troposphere which extends from 0 to 12 km above the surface of the earth. the temperature initially decreases as distance is increased from the earth's surface. commercial jets fly in lower part of the stratosphere. the stratosphere extends upto 50 km. the temperature in stratosphere starts rising again due to presence of ozone which traps the uv rays.

thus, when the planes leave the stratosphere and return to the ground, the exterior temperature increases steadily.

c) up

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