Physics Radiocarbon is produced in the atmosphere as a result of Collision between fast neutrons and nitrogen nuclei present in the atmosphere. Action of ultraviolet light from the sun on atmospheric oxygen. Action of solar radiations particularly cosmic rays on carbon dioxide present in the atmosphere. Lightning discharge in atmosphere. Collision between fast neutrons and nitrogen nuclei present in the atmosphere. Action of ultraviolet light from the sun on atmospheric oxygen. Action of solar radiations particularly cosmic rays on carbon dioxide present in the atmosphere. Lightning discharge in atmosphere. ANSWER DOWNLOAD EXAMIANS APP
Physics It is more difficult to walk on ice than on a concrete road because None of these There is very little friction between the ice and feet pressing it There is more friction between the ice and feer Ice is soft when compared to concrete None of these There is very little friction between the ice and feet pressing it There is more friction between the ice and feer Ice is soft when compared to concrete ANSWER DOWNLOAD EXAMIANS APP
Physics In a Carnot engine when heat is taken from the source, its temperature Decreases Increases Remains constant Decreases and then remains constant Decreases Increases Remains constant Decreases and then remains constant ANSWER DOWNLOAD EXAMIANS APP
Physics A person does some work of 1,000 J in 2 s. His power will be ________ 1000W 25W 50W 500W 1000W 25W 50W 500W ANSWER DOWNLOAD EXAMIANS APP
Physics Green house effect is the heating up of the Earth's atmosphere which is due to The infra-red rays The ultraviolet rays X-rays G-rays The infra-red rays The ultraviolet rays X-rays G-rays ANSWER DOWNLOAD EXAMIANS APP
Physics If objects appear enlarged and inverted in a rear view mirror, then which type of mirror is used? Concave Plane Convex Cylindrical Concave Plane Convex Cylindrical ANSWER DOWNLOAD EXAMIANS APP
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