1
MHT CET 2024 4th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Calculate wave length for emission of a photon having wave number $11516 \mathrm{~cm}^{-1}$.

A
216 nm
B
434 nm
C
868 nm
D
642 nm
2
MHT CET 2024 4th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following statements is correct regarding isobars?

A
These have same number of neutrons.
B
These are the atoms of different elements.
C
These have same atomic number.
D
These have different mass number.
3
MHT CET 2024 3rd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

What is the energy associated with first orbit of $\mathrm{He}^{+}$?

A
$-2.18 \times 10^{-18} \mathrm{~J}$
B
$-4.36 \times 10^{-18} \mathrm{~J}$
C
$-6.54 \times 10^{-18} \mathrm{~J}$
D
$-8.72 \times 10^{-18} \mathrm{~J}$
4
MHT CET 2024 3rd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

What is the wave number of lowest transition in Balmer series?

A
$\mathrm{R}_{\mathrm{H}}\left(\frac{36}{5}\right)$
B
$\mathrm{R}_{\mathrm{H}}\left(\frac{5}{36}\right)$
C
$\mathrm{R}_{\mathrm{H}}\left(\frac{21}{100}\right)$
D
$\mathrm{R}_{\mathrm{H}}\left(\frac{100}{21}\right)$
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