1
TS EAMCET 2023 (Online) 14th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Match the following.

(Take the relative strength of the strongest fundamental forces in nature as one)

List-I
(Fundamental forces in nature)
List-II
(Relative strength)
(A) Strong nuclear force (e) $10^{-2}$
(B) Weak nuclear force (f) 1
(C) Electromagnetic force (g) $10^{10}$
(D) Gravitational force (h) $10^{-13}$
(i) $10^{-39}$
A

A-f, B-i, C-e, D-h

B

A-f, B-h, C-e, D-g

C

A-f, B-h, C-e, D-i

D

A-f, B-e, C-h, D-i

2
TS EAMCET 2023 (Online) 14th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Energy released in the fission of a single uranium nucleus is 200 MeV . Then the number of fissions per second to produce 5 mW power is

A

$1.56 \times 10^8$

B

$1.56 \times 10^{13}$

C

$3.12 \times 10^8$

D

$3.12 \times 10^{13}$

3
TS EAMCET 2023 (Online) 14th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The ratio of longest wavelengths of the spectral lines in the Lyman and Balmer series of hydrogen spectrum is

A

$\frac{3}{23}$

B

$\frac{5}{27}$

C

$\frac{7}{29}$

D

$\frac{9}{31}$

4
TS EAMCET 2023 (Online) 14th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Half-life of a radioactive substance $A$ is two times the half-life of another radioactive substance $B$. Initially the number of nuclei of $A$ and $B$ are $N_A$ and $N_B$ respectively. After three half-lives of $A$, the number of nuclei of both are equal. Then $N_A / N_B$ is

A

$1 / 3$

B

$1 / 4$

C

$1 / 6$

D

$\frac{1}{8}$

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