1
AP EAPCET 2025 - 22nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The ratio of the wavelengths of the first Lyman line and the second Balmer line of hydrogen atom is

A

$3: 4$

B

$1: 4$

C

$2: 3$

D

$1: 3$

2
AP EAPCET 2025 - 22nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Each nuclear fission of ${ }^{235} \mathrm{U}$ releases 200 MeV of energy. If a reactor generates 1 MW power, then the rate of fission in the reactor is

A

$3.125 \times 10^6$

B

$3.125 \times 10^8$

C

$3.125 \times 10^{10}$

D

$3.125 \times 10^{16}$

3
AP EAPCET 2025 - 22nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

When three NAND logic gates are connected as shown in the figure, then the logic gate equivalent to the circuit is

AP EAPCET 2025 - 22nd May Evening Shift Physics - Semiconductor Devices and Logic Gates Question 13 English
A

NOT

B

AND

C

$O R$

D

NOR

4
AP EAPCET 2025 - 22nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The device used for voltage regulation is

A

Zener diode

B

photo diode

C

light emitting diode

D

solar cell