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1
MHT CET 2024 9th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

In hydrogen atom, ratio of the shortest wavelength in the Balmer series to that in the Paschen series is

A
$9: 4$
B
$3: 1$
C
$4: 9$
D
$1: 3$
2
MHT CET 2024 9th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

According to Bohr's theory of hydrogen atom, the ratio of the maximum and minimum wavelength of Lyman series will be

A
$3: 4$
B
$4: 3$
C
$2: 5$
D
$5: 2$
3
MHT CET 2024 4th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The ratio of minimum wavelengths of Lyman and Balmer series will be

A
1.25
B
0.25
C
5
D
10
4
MHT CET 2024 4th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Half-lives of two radioactive elements A and B are 30 minute and 60 minute respectively. Initially the samples have equal number of nuclei. After 120 minute the ratio of decayed numbers of nuclei of $B$ to that of $A$ will be

A
$1: 15$
B
$1: 4$
C
$4: 5$
D
$5: 4$
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