282253 A light ray falls on a rectangular glass slab as shown. The index of refraction of the glass, if total internal reflection is to occur at the vertical face, is

282254 An optical illusion which occurs mainly in deserts during hot summer is based on the principle of

282255 The critical angle for glass is \(41^{\circ} 48^{\prime}\) and that for water is \(48^{\circ} 36^{\prime}\). Calculate the critical angle for glass-water interface.

282256 A beam of light from a source \(L\) is incident normally on a plane mirror mixed at a certain distance \(x\) from the source. The beam is reflected back as a spot on a scale placed just above the source \(L\). When the mirror is rotated through a small angle \(\theta\), the spot of the light is found to move through a distance \(y\) on the scale. The angle \(\theta\) is given by

282253 A light ray falls on a rectangular glass slab as shown. The index of refraction of the glass, if total internal reflection is to occur at the vertical face, is

282254 An optical illusion which occurs mainly in deserts during hot summer is based on the principle of

282255 The critical angle for glass is \(41^{\circ} 48^{\prime}\) and that for water is \(48^{\circ} 36^{\prime}\). Calculate the critical angle for glass-water interface.

282256 A beam of light from a source \(L\) is incident normally on a plane mirror mixed at a certain distance \(x\) from the source. The beam is reflected back as a spot on a scale placed just above the source \(L\). When the mirror is rotated through a small angle \(\theta\), the spot of the light is found to move through a distance \(y\) on the scale. The angle \(\theta\) is given by

282253 A light ray falls on a rectangular glass slab as shown. The index of refraction of the glass, if total internal reflection is to occur at the vertical face, is

282254 An optical illusion which occurs mainly in deserts during hot summer is based on the principle of

282255 The critical angle for glass is \(41^{\circ} 48^{\prime}\) and that for water is \(48^{\circ} 36^{\prime}\). Calculate the critical angle for glass-water interface.

282256 A beam of light from a source \(L\) is incident normally on a plane mirror mixed at a certain distance \(x\) from the source. The beam is reflected back as a spot on a scale placed just above the source \(L\). When the mirror is rotated through a small angle \(\theta\), the spot of the light is found to move through a distance \(y\) on the scale. The angle \(\theta\) is given by

282253 A light ray falls on a rectangular glass slab as shown. The index of refraction of the glass, if total internal reflection is to occur at the vertical face, is

282254 An optical illusion which occurs mainly in deserts during hot summer is based on the principle of

282255 The critical angle for glass is \(41^{\circ} 48^{\prime}\) and that for water is \(48^{\circ} 36^{\prime}\). Calculate the critical angle for glass-water interface.

282256 A beam of light from a source \(L\) is incident normally on a plane mirror mixed at a certain distance \(x\) from the source. The beam is reflected back as a spot on a scale placed just above the source \(L\). When the mirror is rotated through a small angle \(\theta\), the spot of the light is found to move through a distance \(y\) on the scale. The angle \(\theta\) is given by