282844
Assertion: By roughening the surface of a glass sheet its transparency can be reduce.
Reason: Glass sheet with rough surface absorbs more light.
1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason in not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
(e) If the Assertion is incorrect but the Reason is correct.
Explanation:
CWhen glass surface is made rough then the light falling on it is scattered in different reducing its transparency. Also rough surface scatter more light, it absorbs less.
AIIMS-2005
Ray Optics
282845
The attenuation in optical fiber is mainly due to
1 absorption
2 scattering
3 neither absorption nor scattering
4 Both(a) and (b)
Explanation:
D: Negligible light of energy is lost from an optical fibre due to absorption as a result of scattering of light sideways by impurities in the glass fibre.
VITEEE-2010
Ray Optics
282830
The separation of a beam of light into its constituent wavelengths is called
1 reflection
2 refraction
3 dispersion
4 diffraction
Explanation:
C Separation of a beam of light into its constituent wavelength when pass through a prism, is called dispersion of light.
SRMJEEE - 2016
Ray Optics
282806
The dispersive power of a plane transmission diffraction
1 increases with increase in order of diffraction
2 decreases with increase in angle of diffraction
3 decrease with increase in area of ruled surface
4 depends upon the material
Explanation:
A: The dispersive power of plane transmission diffraction increases with increase in order of diffraction.
\(\frac{d \theta}{d \lambda}=\frac{n}{(a+b) \cos \theta}\)
Where \((a+b)\) is grating element, \(\theta\) is diffraction angle for \(\mathrm{n}\) spectrum.
\(=\frac{\mathrm{d} \theta}{\mathrm{d} \lambda} \propto \mathrm{n}\)
282844
Assertion: By roughening the surface of a glass sheet its transparency can be reduce.
Reason: Glass sheet with rough surface absorbs more light.
1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason in not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
(e) If the Assertion is incorrect but the Reason is correct.
Explanation:
CWhen glass surface is made rough then the light falling on it is scattered in different reducing its transparency. Also rough surface scatter more light, it absorbs less.
AIIMS-2005
Ray Optics
282845
The attenuation in optical fiber is mainly due to
1 absorption
2 scattering
3 neither absorption nor scattering
4 Both(a) and (b)
Explanation:
D: Negligible light of energy is lost from an optical fibre due to absorption as a result of scattering of light sideways by impurities in the glass fibre.
VITEEE-2010
Ray Optics
282830
The separation of a beam of light into its constituent wavelengths is called
1 reflection
2 refraction
3 dispersion
4 diffraction
Explanation:
C Separation of a beam of light into its constituent wavelength when pass through a prism, is called dispersion of light.
SRMJEEE - 2016
Ray Optics
282806
The dispersive power of a plane transmission diffraction
1 increases with increase in order of diffraction
2 decreases with increase in angle of diffraction
3 decrease with increase in area of ruled surface
4 depends upon the material
Explanation:
A: The dispersive power of plane transmission diffraction increases with increase in order of diffraction.
\(\frac{d \theta}{d \lambda}=\frac{n}{(a+b) \cos \theta}\)
Where \((a+b)\) is grating element, \(\theta\) is diffraction angle for \(\mathrm{n}\) spectrum.
\(=\frac{\mathrm{d} \theta}{\mathrm{d} \lambda} \propto \mathrm{n}\)
282844
Assertion: By roughening the surface of a glass sheet its transparency can be reduce.
Reason: Glass sheet with rough surface absorbs more light.
1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason in not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
(e) If the Assertion is incorrect but the Reason is correct.
Explanation:
CWhen glass surface is made rough then the light falling on it is scattered in different reducing its transparency. Also rough surface scatter more light, it absorbs less.
AIIMS-2005
Ray Optics
282845
The attenuation in optical fiber is mainly due to
1 absorption
2 scattering
3 neither absorption nor scattering
4 Both(a) and (b)
Explanation:
D: Negligible light of energy is lost from an optical fibre due to absorption as a result of scattering of light sideways by impurities in the glass fibre.
VITEEE-2010
Ray Optics
282830
The separation of a beam of light into its constituent wavelengths is called
1 reflection
2 refraction
3 dispersion
4 diffraction
Explanation:
C Separation of a beam of light into its constituent wavelength when pass through a prism, is called dispersion of light.
SRMJEEE - 2016
Ray Optics
282806
The dispersive power of a plane transmission diffraction
1 increases with increase in order of diffraction
2 decreases with increase in angle of diffraction
3 decrease with increase in area of ruled surface
4 depends upon the material
Explanation:
A: The dispersive power of plane transmission diffraction increases with increase in order of diffraction.
\(\frac{d \theta}{d \lambda}=\frac{n}{(a+b) \cos \theta}\)
Where \((a+b)\) is grating element, \(\theta\) is diffraction angle for \(\mathrm{n}\) spectrum.
\(=\frac{\mathrm{d} \theta}{\mathrm{d} \lambda} \propto \mathrm{n}\)
282844
Assertion: By roughening the surface of a glass sheet its transparency can be reduce.
Reason: Glass sheet with rough surface absorbs more light.
1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason in not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
(e) If the Assertion is incorrect but the Reason is correct.
Explanation:
CWhen glass surface is made rough then the light falling on it is scattered in different reducing its transparency. Also rough surface scatter more light, it absorbs less.
AIIMS-2005
Ray Optics
282845
The attenuation in optical fiber is mainly due to
1 absorption
2 scattering
3 neither absorption nor scattering
4 Both(a) and (b)
Explanation:
D: Negligible light of energy is lost from an optical fibre due to absorption as a result of scattering of light sideways by impurities in the glass fibre.
VITEEE-2010
Ray Optics
282830
The separation of a beam of light into its constituent wavelengths is called
1 reflection
2 refraction
3 dispersion
4 diffraction
Explanation:
C Separation of a beam of light into its constituent wavelength when pass through a prism, is called dispersion of light.
SRMJEEE - 2016
Ray Optics
282806
The dispersive power of a plane transmission diffraction
1 increases with increase in order of diffraction
2 decreases with increase in angle of diffraction
3 decrease with increase in area of ruled surface
4 depends upon the material
Explanation:
A: The dispersive power of plane transmission diffraction increases with increase in order of diffraction.
\(\frac{d \theta}{d \lambda}=\frac{n}{(a+b) \cos \theta}\)
Where \((a+b)\) is grating element, \(\theta\) is diffraction angle for \(\mathrm{n}\) spectrum.
\(=\frac{\mathrm{d} \theta}{\mathrm{d} \lambda} \propto \mathrm{n}\)
