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Byju's Answer
Standard XII
Physics
Kirchhoff's Junction Law
70.what is th...
Question
70.what is the diffrence between nm , nN , AND Nm
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Similar questions
Q.
If
M
and
N
are two sets such that
n
(
M
)
=
17
,
n
(
M
∪
N
)
=
38
and
n
(
N
)
=
23
, find
n
(
M
−
N
)
.
Q.
If
M
∩
N
=
∅
,
n
(
M
∪
N
)
=
18
and
n
(
N
)
=
13
, then
n
(
M
)
is _____ .
Q.
Prove that :-
(
n
m
n
n
)
l
×
(
n
n
n
l
)
m
×
(
n
l
n
m
)
2
=
1
Q.
A black body is at temperature of
2800
K
. The energy of radiation emitted by this object with wavelength between
499
n
m
and
500
n
m
is
U
1
, between
999
n
m
and
1000
n
m
is
U
2
and between
1499
n
m
and
1500
n
m
is
U
3
. The Wient's constant,
b
=
2.88
×
10
6
n
m
−
K
. Then,
Q.
A black body is at a temperature of
2880
K. The energy of radiation emitted by this body between wavelengths
499
nm and
500
nm is
U
1
; between
999
nm and
1000
nm is
U
2
; and between
1499
nm and
1500
nm is
U
3
. Then, (Wein's constant
b
=
2.88
×
10
6
n
m
K
)
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