1
AIEEE 2003
MCQ (Single Correct Answer)
+4
-1
In Bohr series of lines of hydrogen spectrum, the third line from the red end corresponds to which one of the following inter-orbit jumps of the electron for Bohr orbits in an atom of hydrogen
A
5 $$\to$$ 2
B
4 $$\to$$ 1
C
2 $$\to$$ 5
D
3 $$\to$$ 2
2
AIEEE 2003
MCQ (Single Correct Answer)
+4
-1
The de Broglie wavelength of a tennis ball of mass 60 g moving with a velocity of 10 meters per second is approximately
A
10-31 meters
B
10-16 meters
C
10-25 meters
D
10-33 meters
3
AIEEE 2002
MCQ (Single Correct Answer)
+4
-1
Change Language
Uncertainty in position of a minute particle of mass 25 g in space is 10-5 m. What is the uncertainty in its velocity (in ms-1) (h = 6.6 $$\times$$ 10-34 Js)
A
2.4 $$\times$$ 10-34
B
0.5 $$\times$$ 10-34
C
2.1 $$\times$$ 10-28
D
0.5 $$\times$$ 10-23
4
AIEEE 2002
MCQ (Single Correct Answer)
+4
-1
Change Language
In a hydrogen atom, if energy of an electron in ground state is -13.6 eV, then that in the 2nd excited state is
A
-1.51 eV
B
-3.4 eV
C
-6.04 eV
D
-13.6 eV
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