1
AP EAPCET 2025 - 23rd May Evening Shift
MCQ (Single Correct Answer)
+1
-0
The ratio of the wavelengths of the spectral lines emitted due to transitions $3 \rightarrow 2$ and $2 \rightarrow 1$ orbits in the hydrogen atom is
A

$3: 1$

B

$9: 17$

C

$27: 5$

D

$25: 9$

2
AP EAPCET 2025 - 23rd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The density (in $\mathrm{kg} \mathrm{m}^{-3}$ ) of nuclear matter is of the order of

A

$10^{21}$

B

$10^{17}$

C

$10^{12}$

D

$10^8$

3
AP EAPCET 2025 - 23rd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

In common emitter amplifier of a transistor, if the ratio of the voltage gain and current amplification factor is 4 , then the ratio of the collector and base resistances is

A

$16: 1$

B

$1: 16$

C

$1: 4$

D

$4: 1$

4
AP EAPCET 2025 - 23rd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

If three logic gates are connected as shown in the figure, then the correct truth table of the circuit is

AP EAPCET 2025 - 23rd May Evening Shift Physics - Semiconductor Devices and Logic Gates Question 5 English
A

$$ \begin{array}{|c|c|c|} \hline A & B & y \\ \hline 0 & 0 & 1 \\ 0 & 1 & 0 \\ 1 & 0 & 0 \\ 1 & 1 & 1 \\ \hline \end{array} $$

B

$$ \begin{array}{|c|c|c|} \hline A & B & y \\ \hline 0 & 0 & 1 \\ 0 & 1 & 1 \\ 1 & 0 & 1 \\ 1 & 1 & 0 \\ \hline \end{array} $$

C

$$ \begin{array}{|c|c|c|} \hline A & B & y \\ \hline 0 & 0 & 0 \\ 0 & 1 & 0 \\ 1 & 0 & 0 \\ 1 & 1 & 1 \\ \hline \end{array} $$

D

$$ \begin{array}{|c|c|c|} \hline A & B & y \\ \hline 0 & 0 & 0 \\ 0 & 1 & 1 \\ 1 & 0 & 1 \\ 1 & 1 & 0 \\ \hline \end{array} $$