cbsehelp.weebly.com · CH3-tH-CH2-CH3 Write the role of iris in the human eye. What is meant by...
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cbsehelp.weebly.com · CH3-tH-CH2-CH3 Write the role of iris in the human eye. What is meant by dispersion of white light? QW An object is placed at a distance of 20 cm in front of