1
BITSAT 2023
MCQ (Single Correct Answer)
+3
-1

Let the functions $$f: R \rightarrow R$$ and $$g: R \rightarrow R$$ be defined by $$f(x)=e^{x-1}-e^{-|x-1|}$$ and $$g(x)=\frac{1}{2}\left(e^{x-1}+e^{1-x}\right)$$. Then, the area of the region in the first quadrant bounded by the curves $$y=f(x), y=g(x)$ and $x=0$$ is.

A
$$(2-\sqrt{3})+\frac{1}{2}\left(e-e^{-1}\right)$$
B
$$(2+\sqrt{3})+\frac{1}{2}\left(e-e^{-1}\right)$$
C
$$(2-\sqrt{3})+\frac{1}{2}\left(e+e^{-1}\right)$$
D
$$(2+\sqrt{3})+\frac{1}{2}\left(e+e^{-1}\right)$$
2
BITSAT 2023
MCQ (Single Correct Answer)
+3
-1

If $$A, B, C \in[0, \pi]$$ and if $$A, B, C$$ are in $$\mathrm{AP}$$, then $$\frac{\sin A+\sin C}{\cos A+\cos C}$$ is equal to

A
$$\sin B$$
B
$$\cos B$$
C
$$\cot B$$
D
$$\tan B$$
3
BITSAT 2023
MCQ (Single Correct Answer)
+3
-1

For a constant hydraulic stress on an object, the fractional change in the object's volume $$(\Delta V / V)$$ and its bulk modulus $$B$$ are related as

A
$$\frac{\Delta V}{V} \propto B$$
B
$$\frac{\Delta V}{V} \propto B^2$$
C
$$\frac{\Delta V}{V} \propto \frac{1}{B}$$
D
$$\frac{\Delta V}{V} \propto \frac{1}{B^2}$$
4
BITSAT 2023
MCQ (Single Correct Answer)
+3
-1

When 0.25$$\mathop A\limits^o $$ X-Rays strike a material, the photoelectrons from the $$K$$ shell are observed to more in a circle of radius $$23 \mathrm{~mm}$$ in magnetic field of $$4 \times 10^{-2}$$ tesla active perpendicularly to the direction of emission of photoelectrons. What is the Binding energy of $$K$$ shell electrons?

A
31.5 keV
B
23.71 keV
C
29.41 keV
D
24.9 keV
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