# TN 11TH MATHS (Test 1)

Tag: tn 11th maths
Q.1
d/ dx (2/π sin x° ) is
A. π/180 . cos x°
B. 1/90 . cos x°
C. π/90 . cos x°
D. 2/ π . cos x°
Explaination / Solution: Workspace
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Q.2
If x = asinθ and y = bcosθ , then d2y/ d2x is
A. a/ b2 sec2θ
B. – b/a sec2θ
C. –b/a2 sec3θ
D. −b2/a2  sec3θ
Explaination / Solution: Workspace
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Q.3
The derivative of f (x) = x | x | at x = −3 is
A. 6
B. - 6
C. does not exist
D. 0
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Q.4
A man has 3 fifty rupee notes, 4 hundred rupees notes and 6 five hundred rupees notes in his pocket. If 2 notes are taken at random, what are the odds in favour of both notes being of hundred rupee denomination?
A. 1:12
B. 12:1
C. 13:1
D. 1:13
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Q.5
If two events A and B are such that P ( ) = 3/10 and P ( A ∩ ) = 1/2 , then P ( A ∩ B) is
A. 1/2
B. 1/3
C. 1/4
D. 1/5
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Q.6
If , then the value of k is
A. log 3
B. − log 3
C. – 1 / log 3
D. 1 / log 3
Explaination / Solution: Workspace
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Q.7 is
A. B. C. D. Explaination / Solution: Workspace
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Q.8 is
A. B. C. D. Explaination / Solution: Workspace
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Q.9 A.  log ab
B. log (a/b)
C. log (a/b)
D. a/b
Explaination / Solution:
No Explaination.

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Q.10 A. 1
B. e
C. 1/ e
D. 0