D An electromagnetic wave cannot be deflected by magnetic or electric field. It is because they do not consist of charged particles. They propagate in the form of electric and magnetic fields varying both in space and time.
J and K CET- 2006
Electromagnetic Wave
155746
The oscillating electric and magnetic vectors of an electromagnetic wave in vacuum are oriented along
1 the same direction but differ in phase by $90^{\circ}$
2 the same direction and are in phase.
3 mutually perpendicular directions and differ in phase by $90^{\circ}$
4 mutually perpendicular directions and are in phase.
Explanation:
D Electromagnetic wave consists of periodically oscillating electric and magnetic vectors in mutually perpendicular planes but vibrating in phase.
J and K CET- 2003
Electromagnetic Wave
155748
A spectrum in which no frequencies between its limits are missing is called
1 continuous spectrum
2 Fraunhofer lines
3 emissive spectrum
4 none of these
Explanation:
A A continuous spectrum contains all wavelengths of light in a certain range. Hot, dense light sources like star emit a nearly continuous spectrum of light, which travels out in all directions and interacts with other materials in space. It consists of unbroken luminous bands of all wavelengths containing all the colours from violet to red. i.e from low to highfrequency range. These spectra depend on the temperature of the source only.
J and K CET- 2000]
Electromagnetic Wave
155751
A leaf which contains only green pigments, is illuminated by a laser light of wavelength $0.6328 \mu \mathrm{m}$. It would appear to be
1 Brown
2 Black
3 Red
4 Green
Explanation:
B If an object reflects the colour of light incident on it, it will appear with that color but if object absorbs the colour of light it will appear to be black. Since, the given wavelength does not belong to green, so it will absorbed by the leaf and hence, it will appear to be black.
JIPMER-2008
Electromagnetic Wave
155753
Which of the following rays are not electromagnetic waves ?
1 $\beta$-rays
2 Heat rays
3 X-rays
4 $\gamma$-rays
Explanation:
A Beta rays are emitted by radioactive elements and are not part at the electromagnetic spectrum. While heat rays, X-rays, $\gamma$-rays are the part of electromagnetic spectrum.
D An electromagnetic wave cannot be deflected by magnetic or electric field. It is because they do not consist of charged particles. They propagate in the form of electric and magnetic fields varying both in space and time.
J and K CET- 2006
Electromagnetic Wave
155746
The oscillating electric and magnetic vectors of an electromagnetic wave in vacuum are oriented along
1 the same direction but differ in phase by $90^{\circ}$
2 the same direction and are in phase.
3 mutually perpendicular directions and differ in phase by $90^{\circ}$
4 mutually perpendicular directions and are in phase.
Explanation:
D Electromagnetic wave consists of periodically oscillating electric and magnetic vectors in mutually perpendicular planes but vibrating in phase.
J and K CET- 2003
Electromagnetic Wave
155748
A spectrum in which no frequencies between its limits are missing is called
1 continuous spectrum
2 Fraunhofer lines
3 emissive spectrum
4 none of these
Explanation:
A A continuous spectrum contains all wavelengths of light in a certain range. Hot, dense light sources like star emit a nearly continuous spectrum of light, which travels out in all directions and interacts with other materials in space. It consists of unbroken luminous bands of all wavelengths containing all the colours from violet to red. i.e from low to highfrequency range. These spectra depend on the temperature of the source only.
J and K CET- 2000]
Electromagnetic Wave
155751
A leaf which contains only green pigments, is illuminated by a laser light of wavelength $0.6328 \mu \mathrm{m}$. It would appear to be
1 Brown
2 Black
3 Red
4 Green
Explanation:
B If an object reflects the colour of light incident on it, it will appear with that color but if object absorbs the colour of light it will appear to be black. Since, the given wavelength does not belong to green, so it will absorbed by the leaf and hence, it will appear to be black.
JIPMER-2008
Electromagnetic Wave
155753
Which of the following rays are not electromagnetic waves ?
1 $\beta$-rays
2 Heat rays
3 X-rays
4 $\gamma$-rays
Explanation:
A Beta rays are emitted by radioactive elements and are not part at the electromagnetic spectrum. While heat rays, X-rays, $\gamma$-rays are the part of electromagnetic spectrum.
D An electromagnetic wave cannot be deflected by magnetic or electric field. It is because they do not consist of charged particles. They propagate in the form of electric and magnetic fields varying both in space and time.
J and K CET- 2006
Electromagnetic Wave
155746
The oscillating electric and magnetic vectors of an electromagnetic wave in vacuum are oriented along
1 the same direction but differ in phase by $90^{\circ}$
2 the same direction and are in phase.
3 mutually perpendicular directions and differ in phase by $90^{\circ}$
4 mutually perpendicular directions and are in phase.
Explanation:
D Electromagnetic wave consists of periodically oscillating electric and magnetic vectors in mutually perpendicular planes but vibrating in phase.
J and K CET- 2003
Electromagnetic Wave
155748
A spectrum in which no frequencies between its limits are missing is called
1 continuous spectrum
2 Fraunhofer lines
3 emissive spectrum
4 none of these
Explanation:
A A continuous spectrum contains all wavelengths of light in a certain range. Hot, dense light sources like star emit a nearly continuous spectrum of light, which travels out in all directions and interacts with other materials in space. It consists of unbroken luminous bands of all wavelengths containing all the colours from violet to red. i.e from low to highfrequency range. These spectra depend on the temperature of the source only.
J and K CET- 2000]
Electromagnetic Wave
155751
A leaf which contains only green pigments, is illuminated by a laser light of wavelength $0.6328 \mu \mathrm{m}$. It would appear to be
1 Brown
2 Black
3 Red
4 Green
Explanation:
B If an object reflects the colour of light incident on it, it will appear with that color but if object absorbs the colour of light it will appear to be black. Since, the given wavelength does not belong to green, so it will absorbed by the leaf and hence, it will appear to be black.
JIPMER-2008
Electromagnetic Wave
155753
Which of the following rays are not electromagnetic waves ?
1 $\beta$-rays
2 Heat rays
3 X-rays
4 $\gamma$-rays
Explanation:
A Beta rays are emitted by radioactive elements and are not part at the electromagnetic spectrum. While heat rays, X-rays, $\gamma$-rays are the part of electromagnetic spectrum.
NEET Test Series from KOTA - 10 Papers In MS WORD
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Electromagnetic Wave
155745
Electromagnetic waves can be deflected by
1 electric field only
2 magnetic field only
3 both (a) and (b)
4 none of these
Explanation:
D An electromagnetic wave cannot be deflected by magnetic or electric field. It is because they do not consist of charged particles. They propagate in the form of electric and magnetic fields varying both in space and time.
J and K CET- 2006
Electromagnetic Wave
155746
The oscillating electric and magnetic vectors of an electromagnetic wave in vacuum are oriented along
1 the same direction but differ in phase by $90^{\circ}$
2 the same direction and are in phase.
3 mutually perpendicular directions and differ in phase by $90^{\circ}$
4 mutually perpendicular directions and are in phase.
Explanation:
D Electromagnetic wave consists of periodically oscillating electric and magnetic vectors in mutually perpendicular planes but vibrating in phase.
J and K CET- 2003
Electromagnetic Wave
155748
A spectrum in which no frequencies between its limits are missing is called
1 continuous spectrum
2 Fraunhofer lines
3 emissive spectrum
4 none of these
Explanation:
A A continuous spectrum contains all wavelengths of light in a certain range. Hot, dense light sources like star emit a nearly continuous spectrum of light, which travels out in all directions and interacts with other materials in space. It consists of unbroken luminous bands of all wavelengths containing all the colours from violet to red. i.e from low to highfrequency range. These spectra depend on the temperature of the source only.
J and K CET- 2000]
Electromagnetic Wave
155751
A leaf which contains only green pigments, is illuminated by a laser light of wavelength $0.6328 \mu \mathrm{m}$. It would appear to be
1 Brown
2 Black
3 Red
4 Green
Explanation:
B If an object reflects the colour of light incident on it, it will appear with that color but if object absorbs the colour of light it will appear to be black. Since, the given wavelength does not belong to green, so it will absorbed by the leaf and hence, it will appear to be black.
JIPMER-2008
Electromagnetic Wave
155753
Which of the following rays are not electromagnetic waves ?
1 $\beta$-rays
2 Heat rays
3 X-rays
4 $\gamma$-rays
Explanation:
A Beta rays are emitted by radioactive elements and are not part at the electromagnetic spectrum. While heat rays, X-rays, $\gamma$-rays are the part of electromagnetic spectrum.
D An electromagnetic wave cannot be deflected by magnetic or electric field. It is because they do not consist of charged particles. They propagate in the form of electric and magnetic fields varying both in space and time.
J and K CET- 2006
Electromagnetic Wave
155746
The oscillating electric and magnetic vectors of an electromagnetic wave in vacuum are oriented along
1 the same direction but differ in phase by $90^{\circ}$
2 the same direction and are in phase.
3 mutually perpendicular directions and differ in phase by $90^{\circ}$
4 mutually perpendicular directions and are in phase.
Explanation:
D Electromagnetic wave consists of periodically oscillating electric and magnetic vectors in mutually perpendicular planes but vibrating in phase.
J and K CET- 2003
Electromagnetic Wave
155748
A spectrum in which no frequencies between its limits are missing is called
1 continuous spectrum
2 Fraunhofer lines
3 emissive spectrum
4 none of these
Explanation:
A A continuous spectrum contains all wavelengths of light in a certain range. Hot, dense light sources like star emit a nearly continuous spectrum of light, which travels out in all directions and interacts with other materials in space. It consists of unbroken luminous bands of all wavelengths containing all the colours from violet to red. i.e from low to highfrequency range. These spectra depend on the temperature of the source only.
J and K CET- 2000]
Electromagnetic Wave
155751
A leaf which contains only green pigments, is illuminated by a laser light of wavelength $0.6328 \mu \mathrm{m}$. It would appear to be
1 Brown
2 Black
3 Red
4 Green
Explanation:
B If an object reflects the colour of light incident on it, it will appear with that color but if object absorbs the colour of light it will appear to be black. Since, the given wavelength does not belong to green, so it will absorbed by the leaf and hence, it will appear to be black.
JIPMER-2008
Electromagnetic Wave
155753
Which of the following rays are not electromagnetic waves ?
1 $\beta$-rays
2 Heat rays
3 X-rays
4 $\gamma$-rays
Explanation:
A Beta rays are emitted by radioactive elements and are not part at the electromagnetic spectrum. While heat rays, X-rays, $\gamma$-rays are the part of electromagnetic spectrum.