1
AIPMT 2000
MCQ (Single Correct Answer)
+4
-1
When an electron does transition from n = 4 to n = 2, then emitted line spectrum will be
A
first line of Lyman series
B
second line of Balmer series
C
first line of Balmer series
D
second line of Paschen series.
2
AIPMT 2000
MCQ (Single Correct Answer)
+4
-1
Maximum frequency of emission is obtained for the transition
A
n = 2 to n = 1
B
n = 6 to n = 2
C
n = 1 to n = 2
D
n = 2 to n = 6.
3
AIPMT 2000
MCQ (Single Correct Answer)
+4
-1
The cations and anions are arranged in alternate form in
A
metallic crystal
B
ionic crystal
C
covalent crystal
D
semi-conductor crystal.
4
AIPMT 2000
MCQ (Single Correct Answer)
+4
-1
A black body has maximum wavelength $$\lambda $$m at 2000 K. Its corresponding wavelength at 3000 K will be
A
$${3 \over 2}{\lambda _m}$$
B
$${2 \over 3}{\lambda _m}$$
C
$${{16} \over {81}}{\lambda _m}$$
D
$${{81} \over {16}}{\lambda _m}$$