1
AP EAPCET 2024 - 18th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
A mixture consists of two radioactive materials $A_1$ and $A_2$ with half lives of 20 s and 10 s respectively. Initially, the mixture has 40 g of $A_1$ and 160 g of $A_2$. The amount of the two in the mixture will become equal after
A
60 s
B
80 B
C
20 s
D
408
2
AP EAPCET 2024 - 18th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
If $n_r$ and $n_h$ are concentrations of electron and holes in a semiconductor, then the intrinsic carrier concentration $n_j$ in thermal equilibrium is

AP EAPCET 2024 - 18th May Morning Shift Physics - Semiconductor Devices and Logic Gates Question 7 English

A
$n=\sqrt{\frac{n_3}{n_n}}$
B
$n=\frac{n_n}{n_n}$
C
$n=\sqrt{7 b n_n}$
D
$n_1=n_0+n_n$
3
AP EAPCET 2024 - 18th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
In the given digital circuit, if the inputs are $A=1 B_x$ and $C=1$, then the value of $Y_1$ and $Y_2$ are respectino
A
0,1
B
0,0
C
1,1
D
1,0
4
AP EAPCET 2024 - 18th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
If the maximum and minimum voltages of an $A M$ wave are $V_{\max }$ and $V_{\min }$ respectively. Then, the modulation factor $m$ is
A
$\left(V_{\text {max }}+V_{\text {min }}\right) /\left(V_{\text {max }} \cdot V_{\text {min }}\right)$
B
$\left(V_{\text {max }}-V_{\text {mi }}\right) /\left(V_{\text {max }}+V_{\text {min }}\right)$
C
$2 V_{\text {max }}-V_{\text {min }} /\left(V_{\text {max }}+V_{\text {max }}\right)$
D
$\left(V_{\text {nes }}+V_{\text {min }}\right) /\left(V_{\text {max }}-V_{\text {man }}\right)$
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