7. आय-व्यय में सन्तुलन बनाये रखने का सरल उपाय क्या है?
आय-व्यय में सन्तलन बनाये रखने का सरल उपाय है उसका अन
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Objects that emit light on their own is called as luminous body. ... It requires luminous body in its surroundings whose light can be reflected and become visible. Examples of luminous bodies are stars, light bulb, sun, etc
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