science
Grade-7
Easy
Question
A ray of light falls on an air-water interface and an air-glass interface at an angle of incidence of 60 degrees. The angle of refraction in the case of the air-water interface is 40.6 degrees. What will be the angle of refraction in the case of the air-glass interface?
- < 40.6 degrees
- > 40.6 degrees
- = 40.6 degrees
- None of the above
Hint:
The angle decreases when the ray of light goes from rarer medium to denser medium.
The correct answer is: < 40.6 degrees
The correct answer is c). < 40.6 degrees.
When the ray of light goes from rarer medium to denser medium that is from air to glass the refracted ray bends towards the normal. Since the light bends towards the normal the angle decreases.
Related Questions to study
science
Which of the following would bend the light highest?
Which of the following would bend the light highest?
scienceGrade-7
science
When light traveling in glass enters the air, its speed becomes ___ m/s.
When light traveling in glass enters the air, its speed becomes ___ m/s.
scienceGrade-7
science
The refractive index of glass, given the speed of light in the glass, is 2 x 108 m/s is ___.
The refractive index of glass, given the speed of light in the glass, is 2 x 108 m/s is ___.
scienceGrade-7
science
A ray of light is incident on a water-air interface at an angle of 37 degrees. The angle of refraction will be ___ degrees.
A ray of light is incident on a water-air interface at an angle of 37 degrees. The angle of refraction will be ___ degrees.
scienceGrade-7
science
Which of the following cannot be a value of the refractive index of a material?
Which of the following cannot be a value of the refractive index of a material?
scienceGrade-7
science
What decides the amount of bending of light towards or away from the normal?
What decides the amount of bending of light towards or away from the normal?
scienceGrade-7
science
Which of the following has the minimum value of refractive index?
Which of the following has the minimum value of refractive index?
scienceGrade-7
science
During normal incidence, the angle of incidence ___ the angle of refraction.
During normal incidence, the angle of incidence ___ the angle of refraction.
scienceGrade-7
science
The refractive indices of water___ glass ___ air.
The refractive indices of water___ glass ___ air.
scienceGrade-7
science
During normal incidence, the light ray goes ___.
During normal incidence, the light ray goes ___.
scienceGrade-7
science
During normal incidence on a glass slab, the angle of incidence = ____.
During normal incidence on a glass slab, the angle of incidence = ____.
scienceGrade-7
science
The absolute refractive index of a medium is the ratio of the speed of light in the ____ and ____.
The absolute refractive index of a medium is the ratio of the speed of light in the ____ and ____.
scienceGrade-7
science
The minimum value of the refractive index is ___.
The minimum value of the refractive index is ___.
scienceGrade-7
science
A ray of light is incident on an air-glass interface at an angle of 48 degrees and finally comes out from glass to air, after refraction through glass slab, the angle of emergence will be ___ degrees.
A ray of light is incident on an air-glass interface at an angle of 48 degrees and finally comes out from glass to air, after refraction through glass slab, the angle of emergence will be ___ degrees.
scienceGrade-7
science
During normal incidence, the angle of incidence is equal to the angle of refraction = ___ degrees.
During normal incidence, the angle of incidence is equal to the angle of refraction = ___ degrees.
scienceGrade-7
