Electromagnetic Spectrum
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PHXII08:ELECTROMAGNETIC WAVES

368961 The velocity of all radio waves in free space is \(3 \times {10^8}\;m/s\). The frequency of a radio wave of wavelength \(150\;m\) is :

1 \(2\,kHz\)
2 \(1MHz\)
3 \(20\,kHz\)
4 \(2\,MHz\)
PHXII08:ELECTROMAGNETIC WAVES

368963 If \(v_{s}, v_{x}, v_{m}\) are the speeds of \(\gamma\)-rays, \(X\)-rays and microwaves respectively in vacuum then:

1 \(v_{s}>v_{x}>v_{m}\)
2 \(v_{s}>v_{x} < v_{m}\)
3 \(v_{s}=v_{x}=v_{m}\)
4 \(v_{s} \neq v_{x} < v_{m}\)
PHXII08:ELECTROMAGNETIC WAVES

368964 Match Column I (Electromagnetic wave type) with Column II (Its association/application).
Column I
Column II
A
Infrared waves
P
To treat muscular strain
B
Radio waves
Q
For broadcasting
C
X-rays
R
To detect fracture of bones
D
Ultraviolet
S
Absorbed by the ozone layer of the atmosphere

1 \({\rm{A - S,}}\,{\rm{B - R,}}\,{\rm{C - Q,}}\,{\rm{D - P}}\)
2 \({\rm{A - P,}}\,{\rm{B - Q,}}\,{\rm{C - S,}}\,{\rm{D - R}}\)
3 \({\rm{A - R,}}\,{\rm{B - Q,}}\,{\rm{C - P,}}\,{\rm{D - S}}\)
4 \({\rm{A - P,}}\,{\rm{B - Q,}}\,{\rm{C - R,}}\,{\rm{D - S}}\)
PHXII08:ELECTROMAGNETIC WAVES

368965 The waves emitted when a metal target is bombarded with high energy electrons are

1 Radio Waves
2 Microwaves
3 \(X\)-rays
4 Infrared rays
JEE - 2023
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PHXII08:ELECTROMAGNETIC WAVES

368961 The velocity of all radio waves in free space is \(3 \times {10^8}\;m/s\). The frequency of a radio wave of wavelength \(150\;m\) is :

1 \(2\,kHz\)
2 \(1MHz\)
3 \(20\,kHz\)
4 \(2\,MHz\)
PHXII08:ELECTROMAGNETIC WAVES

368963 If \(v_{s}, v_{x}, v_{m}\) are the speeds of \(\gamma\)-rays, \(X\)-rays and microwaves respectively in vacuum then:

1 \(v_{s}>v_{x}>v_{m}\)
2 \(v_{s}>v_{x} < v_{m}\)
3 \(v_{s}=v_{x}=v_{m}\)
4 \(v_{s} \neq v_{x} < v_{m}\)
PHXII08:ELECTROMAGNETIC WAVES

368964 Match Column I (Electromagnetic wave type) with Column II (Its association/application).
Column I
Column II
A
Infrared waves
P
To treat muscular strain
B
Radio waves
Q
For broadcasting
C
X-rays
R
To detect fracture of bones
D
Ultraviolet
S
Absorbed by the ozone layer of the atmosphere

1 \({\rm{A - S,}}\,{\rm{B - R,}}\,{\rm{C - Q,}}\,{\rm{D - P}}\)
2 \({\rm{A - P,}}\,{\rm{B - Q,}}\,{\rm{C - S,}}\,{\rm{D - R}}\)
3 \({\rm{A - R,}}\,{\rm{B - Q,}}\,{\rm{C - P,}}\,{\rm{D - S}}\)
4 \({\rm{A - P,}}\,{\rm{B - Q,}}\,{\rm{C - R,}}\,{\rm{D - S}}\)
PHXII08:ELECTROMAGNETIC WAVES

368965 The waves emitted when a metal target is bombarded with high energy electrons are

1 Radio Waves
2 Microwaves
3 \(X\)-rays
4 Infrared rays
JEE - 2023
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PHXII08:ELECTROMAGNETIC WAVES

368961 The velocity of all radio waves in free space is \(3 \times {10^8}\;m/s\). The frequency of a radio wave of wavelength \(150\;m\) is :

1 \(2\,kHz\)
2 \(1MHz\)
3 \(20\,kHz\)
4 \(2\,MHz\)
PHXII08:ELECTROMAGNETIC WAVES

368963 If \(v_{s}, v_{x}, v_{m}\) are the speeds of \(\gamma\)-rays, \(X\)-rays and microwaves respectively in vacuum then:

1 \(v_{s}>v_{x}>v_{m}\)
2 \(v_{s}>v_{x} < v_{m}\)
3 \(v_{s}=v_{x}=v_{m}\)
4 \(v_{s} \neq v_{x} < v_{m}\)
PHXII08:ELECTROMAGNETIC WAVES

368964 Match Column I (Electromagnetic wave type) with Column II (Its association/application).
Column I
Column II
A
Infrared waves
P
To treat muscular strain
B
Radio waves
Q
For broadcasting
C
X-rays
R
To detect fracture of bones
D
Ultraviolet
S
Absorbed by the ozone layer of the atmosphere

1 \({\rm{A - S,}}\,{\rm{B - R,}}\,{\rm{C - Q,}}\,{\rm{D - P}}\)
2 \({\rm{A - P,}}\,{\rm{B - Q,}}\,{\rm{C - S,}}\,{\rm{D - R}}\)
3 \({\rm{A - R,}}\,{\rm{B - Q,}}\,{\rm{C - P,}}\,{\rm{D - S}}\)
4 \({\rm{A - P,}}\,{\rm{B - Q,}}\,{\rm{C - R,}}\,{\rm{D - S}}\)
PHXII08:ELECTROMAGNETIC WAVES

368965 The waves emitted when a metal target is bombarded with high energy electrons are

1 Radio Waves
2 Microwaves
3 \(X\)-rays
4 Infrared rays
JEE - 2023
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PHXII08:ELECTROMAGNETIC WAVES

368961 The velocity of all radio waves in free space is \(3 \times {10^8}\;m/s\). The frequency of a radio wave of wavelength \(150\;m\) is :

1 \(2\,kHz\)
2 \(1MHz\)
3 \(20\,kHz\)
4 \(2\,MHz\)
PHXII08:ELECTROMAGNETIC WAVES

368963 If \(v_{s}, v_{x}, v_{m}\) are the speeds of \(\gamma\)-rays, \(X\)-rays and microwaves respectively in vacuum then:

1 \(v_{s}>v_{x}>v_{m}\)
2 \(v_{s}>v_{x} < v_{m}\)
3 \(v_{s}=v_{x}=v_{m}\)
4 \(v_{s} \neq v_{x} < v_{m}\)
PHXII08:ELECTROMAGNETIC WAVES

368964 Match Column I (Electromagnetic wave type) with Column II (Its association/application).
Column I
Column II
A
Infrared waves
P
To treat muscular strain
B
Radio waves
Q
For broadcasting
C
X-rays
R
To detect fracture of bones
D
Ultraviolet
S
Absorbed by the ozone layer of the atmosphere

1 \({\rm{A - S,}}\,{\rm{B - R,}}\,{\rm{C - Q,}}\,{\rm{D - P}}\)
2 \({\rm{A - P,}}\,{\rm{B - Q,}}\,{\rm{C - S,}}\,{\rm{D - R}}\)
3 \({\rm{A - R,}}\,{\rm{B - Q,}}\,{\rm{C - P,}}\,{\rm{D - S}}\)
4 \({\rm{A - P,}}\,{\rm{B - Q,}}\,{\rm{C - R,}}\,{\rm{D - S}}\)
PHXII08:ELECTROMAGNETIC WAVES

368965 The waves emitted when a metal target is bombarded with high energy electrons are

1 Radio Waves
2 Microwaves
3 \(X\)-rays
4 Infrared rays
JEE - 2023
For More Updates join with Us