NEET Test Series from KOTA - 10 Papers In MS WORD
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WAVE OPTICS
283062
When light enters glass from vacuum then the wavelength of light
1 remains constant
2 decreases
3 increases
4 becomes zero
Explanation:
: When light enters glass from vacuum, then the frequency does not change but the speed of light decreasing and wavelength also decreases.
MHT-CET 2020
WAVE OPTICS
283067
When a photon enters glass from air, which one of the following quantity does NOT change?
1 Momentum
2 Velocity
3 Energy
4 Wavelength
Explanation:
: We know that, Energy \(=\mathrm{h} v\) Since, frequency (f) remains same in any medium, therefore, energy will also remains constant.
MHT-CET 2020
WAVE OPTICS
283068
Which of the following is the correct statement between the ray of light and the wave front?
1 A ray of light is inclined at \(45^{\circ}\) with the wave front.
2 A ray of light is tangential to the wave front.
3 According to Huygens' principle a ray of light has no physical existence.
4 A ray of light is normal to the wave front.
Explanation:
: A light ray is a line that is perpendicular to the light's wave fronts. Its tangent is collinear with the wave vector. Light rays in homogeneous media are straight. They bend at the interface between two dissimilar media and may be curved in a medium in which the refractive index changes.
MHT-CET 2020
WAVE OPTICS
283071
Huygen's principle of secondary waves is used to:
1 Obtain the wave front geometrically
2 Explain polarisation
3 Obtain focal length of thick lenses
4 Explain dispersion of light
Explanation:
: Huygen's principle of secondary waves is used to geometrical method to find the position of a wave front.
283062
When light enters glass from vacuum then the wavelength of light
1 remains constant
2 decreases
3 increases
4 becomes zero
Explanation:
: When light enters glass from vacuum, then the frequency does not change but the speed of light decreasing and wavelength also decreases.
MHT-CET 2020
WAVE OPTICS
283067
When a photon enters glass from air, which one of the following quantity does NOT change?
1 Momentum
2 Velocity
3 Energy
4 Wavelength
Explanation:
: We know that, Energy \(=\mathrm{h} v\) Since, frequency (f) remains same in any medium, therefore, energy will also remains constant.
MHT-CET 2020
WAVE OPTICS
283068
Which of the following is the correct statement between the ray of light and the wave front?
1 A ray of light is inclined at \(45^{\circ}\) with the wave front.
2 A ray of light is tangential to the wave front.
3 According to Huygens' principle a ray of light has no physical existence.
4 A ray of light is normal to the wave front.
Explanation:
: A light ray is a line that is perpendicular to the light's wave fronts. Its tangent is collinear with the wave vector. Light rays in homogeneous media are straight. They bend at the interface between two dissimilar media and may be curved in a medium in which the refractive index changes.
MHT-CET 2020
WAVE OPTICS
283071
Huygen's principle of secondary waves is used to:
1 Obtain the wave front geometrically
2 Explain polarisation
3 Obtain focal length of thick lenses
4 Explain dispersion of light
Explanation:
: Huygen's principle of secondary waves is used to geometrical method to find the position of a wave front.
283062
When light enters glass from vacuum then the wavelength of light
1 remains constant
2 decreases
3 increases
4 becomes zero
Explanation:
: When light enters glass from vacuum, then the frequency does not change but the speed of light decreasing and wavelength also decreases.
MHT-CET 2020
WAVE OPTICS
283067
When a photon enters glass from air, which one of the following quantity does NOT change?
1 Momentum
2 Velocity
3 Energy
4 Wavelength
Explanation:
: We know that, Energy \(=\mathrm{h} v\) Since, frequency (f) remains same in any medium, therefore, energy will also remains constant.
MHT-CET 2020
WAVE OPTICS
283068
Which of the following is the correct statement between the ray of light and the wave front?
1 A ray of light is inclined at \(45^{\circ}\) with the wave front.
2 A ray of light is tangential to the wave front.
3 According to Huygens' principle a ray of light has no physical existence.
4 A ray of light is normal to the wave front.
Explanation:
: A light ray is a line that is perpendicular to the light's wave fronts. Its tangent is collinear with the wave vector. Light rays in homogeneous media are straight. They bend at the interface between two dissimilar media and may be curved in a medium in which the refractive index changes.
MHT-CET 2020
WAVE OPTICS
283071
Huygen's principle of secondary waves is used to:
1 Obtain the wave front geometrically
2 Explain polarisation
3 Obtain focal length of thick lenses
4 Explain dispersion of light
Explanation:
: Huygen's principle of secondary waves is used to geometrical method to find the position of a wave front.
283062
When light enters glass from vacuum then the wavelength of light
1 remains constant
2 decreases
3 increases
4 becomes zero
Explanation:
: When light enters glass from vacuum, then the frequency does not change but the speed of light decreasing and wavelength also decreases.
MHT-CET 2020
WAVE OPTICS
283067
When a photon enters glass from air, which one of the following quantity does NOT change?
1 Momentum
2 Velocity
3 Energy
4 Wavelength
Explanation:
: We know that, Energy \(=\mathrm{h} v\) Since, frequency (f) remains same in any medium, therefore, energy will also remains constant.
MHT-CET 2020
WAVE OPTICS
283068
Which of the following is the correct statement between the ray of light and the wave front?
1 A ray of light is inclined at \(45^{\circ}\) with the wave front.
2 A ray of light is tangential to the wave front.
3 According to Huygens' principle a ray of light has no physical existence.
4 A ray of light is normal to the wave front.
Explanation:
: A light ray is a line that is perpendicular to the light's wave fronts. Its tangent is collinear with the wave vector. Light rays in homogeneous media are straight. They bend at the interface between two dissimilar media and may be curved in a medium in which the refractive index changes.
MHT-CET 2020
WAVE OPTICS
283071
Huygen's principle of secondary waves is used to:
1 Obtain the wave front geometrically
2 Explain polarisation
3 Obtain focal length of thick lenses
4 Explain dispersion of light
Explanation:
: Huygen's principle of secondary waves is used to geometrical method to find the position of a wave front.
