Explain the statement in tha light of prescibed study material
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Explanation:
Historical materialism, also known as the materialist conception of history, is a methodology used by some communist and Marxist historiographers that focuses on human societies and their development through history, arguing that history is the result of material conditions rather than ideals.This was first articulated by Karl Marx (1818–1883) as the "materialist conception of history
The photoelectric effect is the process that involves the ejection or release of electrons from the surface of materials (generally a metal) when light falls on them. The photoelectric effect is an important concept that enables us to clearly understand the quantum nature of light and electrons.
Plants and other autotrophs synthesize their own food materials by the use of light. The light which falls on the leaves and other greenish surfaces on plants is trapped. This trapped energy is converted to reserve energy in the form of carbohydrates. The carbon dioxide and water are used up to form carbohydrates in the presence of sunlight.