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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.
There’s nothing much _________ to do now.
In each of the following questions, one word is highlighted in bold. There are four sentences given in the option. Out of the four sentences, three wil...
Select the most appropriate antonym of the given word.
PERSEVERANCE
This electoral demography (A) provides an unassailable (B) base for a dependency (C) culture that dominates (D) the political process.
...Select the most appropriate opposite of the given word CARELESS
Select the most appropriate synonym of the given word
Judicious
choose the option which represents a pair of either synonyms or antonyms.
Which of the following is a synonym for "plethora"?
Choose the word correct synonym:
Elevate
