Huygen’s theory explains propagation of wave front.
PHXII10:WAVE OPTICS
367962
Huygens concept of wavelets is useful in
1 explaining polarisation
2 determining focal length of the lenses
3 determining chromatic aberration
4 geometrical reconstruction of a wavefront
Explanation:
Conceptual Question
PHXII10:WAVE OPTICS
367963
Huygens' principle of secondary wavelets may be used to
1 find the velocity of light in vacuum
2 explain the particle's behaviour of light
3 find the new position of a wavefront
4 explain photoelectric effect
Explanation:
Every point on a given wavefront act as a secondary source of light and emits secondary wavelets which travels in all directions with the speed of light in the medium. A surface touching are these secondary wavelets tangentially in the forward direction, gives the shape of a new wavefront at that instant of time. Hence, secondary wavelets may be used to find the new position of the wavefront.
PHXII10:WAVE OPTICS
367964
The length of the optical path of two media in contact of length \(d_{1}\) and \(d_{2}\) of refractive indices \(\mu_{1}\) and \(\mu_{2}\) respectively, is
1 \(\mu_{1} d_{1}+\mu_{2} d_{2}\)
2 \(\mu_{1} d_{2}+\mu_{2} d_{1}\)
3 \(\dfrac{d_{1} d_{2}}{\mu_{1} \mu_{2}}\)
4 \(\dfrac{d_{1}+d_{2}}{\mu_{1} \mu_{2}}\)
Explanation:
Optical path \(N=\mu t\). In medium (1), optical path \(=\mu_{1} d_{1}\) In medium (2), optical path \(=\mu_{2} d_{2}\) \(\therefore\) Total path \(=\mu_{1} d_{1}+\mu_{2} d_{2}\).
Huygen’s theory explains propagation of wave front.
PHXII10:WAVE OPTICS
367962
Huygens concept of wavelets is useful in
1 explaining polarisation
2 determining focal length of the lenses
3 determining chromatic aberration
4 geometrical reconstruction of a wavefront
Explanation:
Conceptual Question
PHXII10:WAVE OPTICS
367963
Huygens' principle of secondary wavelets may be used to
1 find the velocity of light in vacuum
2 explain the particle's behaviour of light
3 find the new position of a wavefront
4 explain photoelectric effect
Explanation:
Every point on a given wavefront act as a secondary source of light and emits secondary wavelets which travels in all directions with the speed of light in the medium. A surface touching are these secondary wavelets tangentially in the forward direction, gives the shape of a new wavefront at that instant of time. Hence, secondary wavelets may be used to find the new position of the wavefront.
PHXII10:WAVE OPTICS
367964
The length of the optical path of two media in contact of length \(d_{1}\) and \(d_{2}\) of refractive indices \(\mu_{1}\) and \(\mu_{2}\) respectively, is
1 \(\mu_{1} d_{1}+\mu_{2} d_{2}\)
2 \(\mu_{1} d_{2}+\mu_{2} d_{1}\)
3 \(\dfrac{d_{1} d_{2}}{\mu_{1} \mu_{2}}\)
4 \(\dfrac{d_{1}+d_{2}}{\mu_{1} \mu_{2}}\)
Explanation:
Optical path \(N=\mu t\). In medium (1), optical path \(=\mu_{1} d_{1}\) In medium (2), optical path \(=\mu_{2} d_{2}\) \(\therefore\) Total path \(=\mu_{1} d_{1}+\mu_{2} d_{2}\).
Huygen’s theory explains propagation of wave front.
PHXII10:WAVE OPTICS
367962
Huygens concept of wavelets is useful in
1 explaining polarisation
2 determining focal length of the lenses
3 determining chromatic aberration
4 geometrical reconstruction of a wavefront
Explanation:
Conceptual Question
PHXII10:WAVE OPTICS
367963
Huygens' principle of secondary wavelets may be used to
1 find the velocity of light in vacuum
2 explain the particle's behaviour of light
3 find the new position of a wavefront
4 explain photoelectric effect
Explanation:
Every point on a given wavefront act as a secondary source of light and emits secondary wavelets which travels in all directions with the speed of light in the medium. A surface touching are these secondary wavelets tangentially in the forward direction, gives the shape of a new wavefront at that instant of time. Hence, secondary wavelets may be used to find the new position of the wavefront.
PHXII10:WAVE OPTICS
367964
The length of the optical path of two media in contact of length \(d_{1}\) and \(d_{2}\) of refractive indices \(\mu_{1}\) and \(\mu_{2}\) respectively, is
1 \(\mu_{1} d_{1}+\mu_{2} d_{2}\)
2 \(\mu_{1} d_{2}+\mu_{2} d_{1}\)
3 \(\dfrac{d_{1} d_{2}}{\mu_{1} \mu_{2}}\)
4 \(\dfrac{d_{1}+d_{2}}{\mu_{1} \mu_{2}}\)
Explanation:
Optical path \(N=\mu t\). In medium (1), optical path \(=\mu_{1} d_{1}\) In medium (2), optical path \(=\mu_{2} d_{2}\) \(\therefore\) Total path \(=\mu_{1} d_{1}+\mu_{2} d_{2}\).
Huygen’s theory explains propagation of wave front.
PHXII10:WAVE OPTICS
367962
Huygens concept of wavelets is useful in
1 explaining polarisation
2 determining focal length of the lenses
3 determining chromatic aberration
4 geometrical reconstruction of a wavefront
Explanation:
Conceptual Question
PHXII10:WAVE OPTICS
367963
Huygens' principle of secondary wavelets may be used to
1 find the velocity of light in vacuum
2 explain the particle's behaviour of light
3 find the new position of a wavefront
4 explain photoelectric effect
Explanation:
Every point on a given wavefront act as a secondary source of light and emits secondary wavelets which travels in all directions with the speed of light in the medium. A surface touching are these secondary wavelets tangentially in the forward direction, gives the shape of a new wavefront at that instant of time. Hence, secondary wavelets may be used to find the new position of the wavefront.
PHXII10:WAVE OPTICS
367964
The length of the optical path of two media in contact of length \(d_{1}\) and \(d_{2}\) of refractive indices \(\mu_{1}\) and \(\mu_{2}\) respectively, is
1 \(\mu_{1} d_{1}+\mu_{2} d_{2}\)
2 \(\mu_{1} d_{2}+\mu_{2} d_{1}\)
3 \(\dfrac{d_{1} d_{2}}{\mu_{1} \mu_{2}}\)
4 \(\dfrac{d_{1}+d_{2}}{\mu_{1} \mu_{2}}\)
Explanation:
Optical path \(N=\mu t\). In medium (1), optical path \(=\mu_{1} d_{1}\) In medium (2), optical path \(=\mu_{2} d_{2}\) \(\therefore\) Total path \(=\mu_{1} d_{1}+\mu_{2} d_{2}\).
