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) | $10^{-39}$ | ||
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
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
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
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