science
Grade-7
Easy
Question
Which of the following can be the value of the refractive index of a material?
- 0
- 0.1
- -2
- 1.3
Hint:
There is a minimum value of refractive index.
The correct answer is: 1.3
The correct answer is d)1.3.
The minimum refractive index is 1. All the other options have values lower than 1. Refractive index is never less than 1 as we calculate the refractive index by taking ratio of speed of light in vacuum and speed of light in other medium. As the speed of light is fastest in vacuum the value is always greater than 1.
Related Questions to study
science
Angle of incidence = ____
Angle of incidence = ____
scienceGrade-7
science
The incident ray is ____ to the emergent ray.
The incident ray is ____ to the emergent ray.
scienceGrade-7
science
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?
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?
scienceGrade-7
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
