1
TS EAMCET 2023 (Online) 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Electric current $(I)$ is measured by galvanometer, the current being proportional to the tangent of the angle ( $\theta$ ) of deflection. If the deflection is read as $45^{\circ}$ and an error of $1 \%$ is made in reading it, the percentage error in the current is

A
$\pi$
B
$\pi / 2$
C
$\pi / 3$
D
$\pi / 4$
2
TS EAMCET 2023 (Online) 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

If the equation of a tangent drawn to the curve $y=\cos (x+y),-1 \leq x \leq 1+\pi$ is $x+2 y=k$, then $k=$

A
1
B
$\pi / 4$
C
$\pi / 2$
D
2
3
TS EAMCET 2023 (Online) 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

$f: R \rightarrow R$ is a function defined by $f(x)=\frac{1}{e^x+2 e^{-x}}$

Assertion (A) : $f(c)=\frac{1}{3}$ for some values of $c \in R$

Reason (R) : $0 < f(x) \leq \frac{1}{2 \sqrt{2}}$ for all $x \in R$

Then, which of the following options is correct?

A
(A) and (R) are true, (R) is the correct explanation of (A)
B
(A) and (R) are true, (R) is not the correct explanation for (A)
C
(A) is true but (R) is false
D
(A) is false but (R) is true
4
TS EAMCET 2023 (Online) 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
$$ \text { Match the following items from List I into List II } $$
List-I List-II
1. sin 2 x cos 4 x d x sin 2 x cos 4 x d x int(sin^(2)x)/(cos^(4)x)dx A. tan 2 x 2 + ln | cos x | + C tan 2 x 2 + ln | cos x | + C quad(tan^(2)x)/(2)+ln |cos x|+C
2. sin 4 x cos 2 x d x sin 4 x cos 2 x d x int(sin^(4)x)/(cos^(2)x)dx B. cos x + sec x + C cos x + sec x + C cos x+sec x+C
3. sin 3 x cos 2 x d x sin 3 x cos 2 x d x int(sin^(3)x)/(cos^(2)x)dx C. tan 3 x 3 + C tan 3 x 3 + C (tan^(3)x)/(3)+C
4. sin 3 x cos 3 x d x sin 3 x cos 3 x d x int(sin^(3)x)/(cos^(3)x)dx D. tan x + sin 2 x 4 3 x 2 + C tan x + sin 2 x 4 3 x 2 + C tan x+(sin 2x)/(4)-(3x)/(2)+C
E. cos x sec x + C cos x sec x + C cos x-sec x+C
Select the correct choice
A
1-C, 2-E, 3-B, 4-A
B
1,-C, 2-D, 3-B, 4-A
C
1-D, 2-C, 3-A, 4-B
D
1-C, 2-E, 3-A, 4-D
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