Question
Which one of the following causes small air bubbles in
water, which is stored in a glass vessel, to appear to shine with a silvery luster? Directions : Each of the following five items consists of a word in capital letters, followed by four words or groups of words. Select the word or group of words that is most similar in meaning to the word in capital letters.Solution
The reason why the air bubble shines in water is because of the total internal reflection. • Total internal reflection is a phenomenon in which light travels back in the same medium or reflects back. It occurs when light travels from an optically denser to a rarer medium. • This happens in an air bubble in water when light travels from water to air and back out. This creates the shine or the silvery lustre. Hence option D is correct.
Cultivation of such crop which have different natural habit and zero competition is known as
Lichens, the pioneer organisms that initiate ecological succession are actually a symbiotic association of
“Golden treasure” of Assam is known to which silk
Cultivated bread wheat or common wheat is ____
The law that determines the best uses of limited resources among alternative uses is known as:
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Examples of erosion permitting crops are:
 Hydrophytes are known as
Dehorning of horned cattle is the process of removal of their horns or the process of preventing their growth. The process of dehorning is accomplished ...
In which of the following stage cell cycle DNA replication take place?
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