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Physics · Question 1241
If the tension in a string is doubled while its linear density stays constant, how does wave speed change?
Doubled
Becomes half
√2 times greater
No change
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Correct answer: C
√2 times greater
Wave speed on a string is proportional to the square root of tension, so doubling tension multiplies speed by √2.
Physics · Question 1242
What is the SI unit of mutual inductance?
Joule
Henry
Tesla
Weber
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Correct answer: B
Henry
The SI unit of mutual inductance is the henry (H).
English · Question 1243
Prepositions are words used to show … ?
Action
Feeling
Relation between words
Tense
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Correct answer: C
Relation between words
A preposition expresses the relation of a noun or pronoun to another element in a sentence.
English · Question 1244
What part of speech is “everything”?
Noun
Adverb
Adjective
Pronoun
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Correct answer: D
Pronoun
“Everything” is an indefinite pronoun.
English · Question 1245
Which word is closest in meaning to “excused”?
Forgiven
Ignored
Punished
Blamed
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Correct answer: A
Forgiven
In this context, “forgiven” is the closest synonym of “excused”.
Verbal Intelligence · Question 1246
A pen is bought for 30 rupees and sold for 40 rupees. What is the profit?