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

The ratio of the orders of the spacings of nuclear energy levels and atomic energy levels is

A

$10^3$

B

$10^6$

C

$10^9$

D

$10^{12}$

2
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

$1: 3$

3
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

$3.125 \times 10^{16}$

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

The difference between the frequencies of second and first Paschen lines of hydrogen atom is ( $R=$ Rydberg constant and $c=$ speed of light in vacuum)

A

$\frac{9 R c}{16}$

B

$\frac{16 R c}{25}$

C

$\frac{9 R c}{400}$

D

$\frac{3 R c}{200}$

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