BITSAT 2024 | Atoms and Nuclei Question 1 | Physics

Which of the following transitions of $ \mathrm{He}^{+} $ion will give rise to spectral line which has same wavelength as the spectral line in hydrogen atom?

$ n=4 $ to $ n=2 $

$ n=6 $ to $ n=5 $

$ n=6 $ to $ n=3 $

None of these

BITSAT 2023

MCQ (Single Correct Answer)

-1

The total energy of an electron in the second excited state of hydrogen atom is about $$-1.51 \mathrm{~eV}$$. Its kinetic energy in this state is

$$-1.5 \mathrm{~eV}$$

$$-3.02 \mathrm{~eV}$$

3.02 eV

1.51 eV

BITSAT 2023

MCQ (Single Correct Answer)

-1

After two hours one-eight of the starting amount of a certain radioactive isotope remained undecayed. The half-life of the isotope is

15 min

40 min

45 min

4 h

BITSAT 2022

MCQ (Single Correct Answer)

-1

In a radioactive material the activity at time t₁, is A₁ and at a later time t₂, it is A₂. If the decay constant of the material is $$\lambda$$, then

$${A_1} = {A_2}\,{e^{ - \lambda ({t_1} - {t_2})}}$$

$${A_1} = {A_2}\,{e^{\lambda ({t_1} - {t_2})}}$$

$${A_1} = {A_2}({t_2}/{t_1})$$

$${A_1} = {A_2}$$

Questions Asked from MCQ (Single Correct Answer)

BITSAT 2024 (1) BITSAT 2023 (2) BITSAT 2022 (1) BITSAT 2021 (3) BITSAT 2020 (2)

BITSAT Subjects

English Proficiency

Logical Reasoning

Verbal

Direction Sense Test Analogy Classification Series Completion Blood Relations Logical Deduction Logic Chart

Non Verbal

Completion of Figure Figure Formation Paper Folding and Cutting Figure Matrix Rule Detection Mirror Image