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A Steel Sphere of Radius 0

question 43

Multiple Choice

A steel sphere of radius 0.1 m at 400°K is immersed in an oil at 300°K. If the centre of the sphere reaches 350°K in 20 minutes, how long will it take for a 0.05 m radius steel sphere to reach the same temperature (at the centre) under identical conditions? Assume that the conductive heat transfer co-efficient is infinitely large.


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Groups of organs that work together to perform complex functions for the body.

Clinical Age

Age of the developing fetus from the time of the mother’s last menstrual period before pregnancy.

Conception

The process of fertilization where a sperm cell unites with an ovum, forming a zygote, marking the beginning of pregnancy.

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The monthly cycle of changes in the ovaries and the lining of the uterus, leading to the shedding of the uterine lining and bleeding, known as menstruation.

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