1
TG EAPCET 2025 (Online) 3rd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

A radioactive material of half-life 2.5 hours emits radiation that is 32 times the safe maximum level. The time (in hours) after which the material can be handled safely is

A

10

B

25

C

5

D

12.5

2
TG EAPCET 2025 (Online) 3rd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

If the number of uranium nuclei required per hour to produce a power of 64 kW is $7.2 \times 10^{18}$, then the energy released per fission is

A

$0.64 \times 10^{-10} \mathrm{~J}$

B

$3.2 \times 10^{-13} \mathrm{~J}$

C

$0.32 \times 10^{-10} \mathrm{~J}$

D

$3.2 \times 10^{-10} \mathrm{~J}$

3
TG EAPCET 2025 (Online) 2nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Bose-Einstein statistics is applicable to particles with

A

even integral spin particles only

B

integral spin particles

C

half odd integral spin particles

D

odd integral spin particles only

4
TG EAPCET 2025 (Online) 2nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The ratio of the kinetic energies of the electrons in the third and fourth excited states of hydrogen atom is

A

$4: 3$

B

$16: 9$

C

$25: 16$

D

$5: 4$

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