For kerosene, n = 1.44 For turpentine, n = 1.47 For water, n = 1.33 Because water has the lowest refractive index, therefore light travels fastest in this optically rarer medium than kerosene and turpentine oil.
For kerosene, n = 1.44
For turpentine, n = 1.47
For water, n = 1.33
Because water has the lowest refractive index, therefore light travels fastest in this optically rarer medium than kerosene and turpentine oil.
From table 10.3, diamond has highest refractive index (= 2.42), so it has highest optical density. Air has lowest refractive index (= 1.0003), so it has lowest optical density.
From table 10.3, diamond has highest refractive index (= 2.42), so it has highest optical density.
Air has lowest refractive index (= 1.0003),
so it has lowest optical density.
Speed of light in vacuum, c = 3 × 10⁸ m s−¹ Refractive index of glass, n = 1.50 Speed of light in the glass, v = c/n = 3×10⁸ m s−¹ Refractive index of glass, n = 1.50 Speed of light in the glass, v= c/n = 3×10⁸/1.50 = 2×10⁸ ms−¹
Speed of light in vacuum, c = 3 × 10⁸ m s−¹
Refractive index of glass, n = 1.50
Speed of light in the glass, v = c/n = 3×10⁸ m s−¹
Refractive index of glass, n = 1.50
Speed of light in the glass, v= c/n = 3×10⁸/1.50 = 2×10⁸ ms−¹
The small numbers of surviving tigers are a cause of worry from the point of view of genetics because in tigers there are negligible genetic variations. Due to this they are not well adapted. The rapid environmental changes cannot be favouable for them. If these changes are not controlled, tigers woRead more
The small numbers of surviving tigers are a cause of worry from the point of view of genetics because in tigers there are negligible genetic variations. Due to this they are not well adapted. The rapid environmental changes cannot be favouable for them. If these changes are not controlled, tigers would be wiped out.
You are given kerosene, turpentine and water. In which of these does the light travel fastest? Use the information given in Table 10.3.
For kerosene, n = 1.44 For turpentine, n = 1.47 For water, n = 1.33 Because water has the lowest refractive index, therefore light travels fastest in this optically rarer medium than kerosene and turpentine oil.
For kerosene, n = 1.44
See lessFor turpentine, n = 1.47
For water, n = 1.33
Because water has the lowest refractive index, therefore light travels fastest in this optically rarer medium than kerosene and turpentine oil.
Find out, from Table 10.3, the medium having highest optical density. Also find the medium with lowest optical density.
From table 10.3, diamond has highest refractive index (= 2.42), so it has highest optical density. Air has lowest refractive index (= 1.0003), so it has lowest optical density.
From table 10.3, diamond has highest refractive index (= 2.42), so it has highest optical density.
See lessAir has lowest refractive index (= 1.0003),
so it has lowest optical density.
Light enters from air to glass having refractive index 1.50. What is the speed of light in the glass? The speed of light in vacuum is 3 × 108 m s–1.
Speed of light in vacuum, c = 3 × 10⁸ m s−¹ Refractive index of glass, n = 1.50 Speed of light in the glass, v = c/n = 3×10⁸ m s−¹ Refractive index of glass, n = 1.50 Speed of light in the glass, v= c/n = 3×10⁸/1.50 = 2×10⁸ ms−¹
Speed of light in vacuum, c = 3 × 10⁸ m s−¹
See lessRefractive index of glass, n = 1.50
Speed of light in the glass, v = c/n = 3×10⁸ m s−¹
Refractive index of glass, n = 1.50
Speed of light in the glass, v= c/n = 3×10⁸/1.50 = 2×10⁸ ms−¹
A ray of light travelling in air enters obliquely into water. Does the light ray bend towards the normal or away from the normal? Why?
The light-ray bends towards the normal because the ray of light goes from a rarer medium to a denser medium.
The light-ray bends towards the normal because the ray of light goes from a rarer medium to a denser medium.
See lessWhy are the small numbers of surviving tigers a cause of worry from the point of view of genetics?
The small numbers of surviving tigers are a cause of worry from the point of view of genetics because in tigers there are negligible genetic variations. Due to this they are not well adapted. The rapid environmental changes cannot be favouable for them. If these changes are not controlled, tigers woRead more
The small numbers of surviving tigers are a cause of worry from the point of view of genetics because in tigers there are negligible genetic variations. Due to this they are not well adapted. The rapid environmental changes cannot be favouable for them. If these changes are not controlled, tigers would be wiped out.
See less