364988 Assertion :
The frequencies of incident, reflected and refracted beam of monochromatic light incident from one medium to another are same.
Reason :
The incident, reflected and refracted rays are coplanar.

364989 If the speed of light in vacuum is \(c\,m{s^{ - 1}}\), then the velocity of light in a refractive index 1.5 is :

364990 Assertion :
If optical density of a substance is more than that of water then the mass density of substance can be less than water.
Reason :
Optical density and mass density are not related.

364991 A converging beam is incident on a system of two glass slabs with refractive indices \({\mu_{1}=(3 / 2), \mu_{2}=(5 / 4)}\) and a concave mirror placed at a distance ' \({l}\) ' from the closest face of the slab 2 . The observer \({O}\) receives the reflected rays from the system and perceives that the image is formed at \({P}\) itself (see figure) which is also the point of convergence of the incident beam (extrapolated). If the concave mirror's focal length is 20 \(cm\) . Find the value of \({l}\)

364988 Assertion :
The frequencies of incident, reflected and refracted beam of monochromatic light incident from one medium to another are same.
Reason :
The incident, reflected and refracted rays are coplanar.

364989 If the speed of light in vacuum is \(c\,m{s^{ - 1}}\), then the velocity of light in a refractive index 1.5 is :

364990 Assertion :
If optical density of a substance is more than that of water then the mass density of substance can be less than water.
Reason :
Optical density and mass density are not related.

364991 A converging beam is incident on a system of two glass slabs with refractive indices \({\mu_{1}=(3 / 2), \mu_{2}=(5 / 4)}\) and a concave mirror placed at a distance ' \({l}\) ' from the closest face of the slab 2 . The observer \({O}\) receives the reflected rays from the system and perceives that the image is formed at \({P}\) itself (see figure) which is also the point of convergence of the incident beam (extrapolated). If the concave mirror's focal length is 20 \(cm\) . Find the value of \({l}\)

364988 Assertion :
The frequencies of incident, reflected and refracted beam of monochromatic light incident from one medium to another are same.
Reason :
The incident, reflected and refracted rays are coplanar.

364989 If the speed of light in vacuum is \(c\,m{s^{ - 1}}\), then the velocity of light in a refractive index 1.5 is :

364990 Assertion :
If optical density of a substance is more than that of water then the mass density of substance can be less than water.
Reason :
Optical density and mass density are not related.

364991 A converging beam is incident on a system of two glass slabs with refractive indices \({\mu_{1}=(3 / 2), \mu_{2}=(5 / 4)}\) and a concave mirror placed at a distance ' \({l}\) ' from the closest face of the slab 2 . The observer \({O}\) receives the reflected rays from the system and perceives that the image is formed at \({P}\) itself (see figure) which is also the point of convergence of the incident beam (extrapolated). If the concave mirror's focal length is 20 \(cm\) . Find the value of \({l}\)

364988 Assertion :
The frequencies of incident, reflected and refracted beam of monochromatic light incident from one medium to another are same.
Reason :
The incident, reflected and refracted rays are coplanar.

364989 If the speed of light in vacuum is \(c\,m{s^{ - 1}}\), then the velocity of light in a refractive index 1.5 is :

364990 Assertion :
If optical density of a substance is more than that of water then the mass density of substance can be less than water.
Reason :
Optical density and mass density are not related.

364991 A converging beam is incident on a system of two glass slabs with refractive indices \({\mu_{1}=(3 / 2), \mu_{2}=(5 / 4)}\) and a concave mirror placed at a distance ' \({l}\) ' from the closest face of the slab 2 . The observer \({O}\) receives the reflected rays from the system and perceives that the image is formed at \({P}\) itself (see figure) which is also the point of convergence of the incident beam (extrapolated). If the concave mirror's focal length is 20 \(cm\) . Find the value of \({l}\)