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with respect to the vertical. Will he hit the fish if he throws the axe at the same angle as he actually sees it?
. At what angle does it exit from the glass? What happens to the ray?
, as shown in the figure below. The vessel has an interior lined with flat mirrors. After the reflections from the mirrors, the ray returns to the air. At what angle does it pass into the air again?
with respect to the water surface from the air? The refractive index of water is 1.33.
.
into the water. What will be the width of the beam in the water? The refractive index of water is 1.33 .
against the angle of incidence 
for a beam travelling from air to water. The refractive index of water is 1.33.
long is erected in the bottom of 
deep water. It is observed from the air at an angle of 
to the horizontal. What is the apparent height of the pool we see? The refractive index of water is 1.33.
with respect to the water surface. At what angle with respect to the vertical do the ripples spread in the water? The refractive index of water is 1.33.
of the hemisphere and the distance 
, from the centre of the hemisphere, of the point on the surface of the hemisphere through which the ray penetrates so that the ray is completely reflected such that both the incident and reflected rays are parallel to each other and the distance between them is 
? The refractive index of glass is 1.51.
. A laser beam is directed from the upper left edge of the container so that it hits the lower right edge of the container. A small metal object is placed 
to the left of the lower right edge. To what height do we have to pour water into the container so that the beam hits the metal object? The refractive index of water is 1.33.
deep water. What is the radius of the circle on the surface of the water through which light passes into the air? The refractive index of water is 1.33.
deep water. The sun shines on it at an angle 
with respect to the vertical so that there is a 
long shadow at the bottom. What is the length of that part of the stake that is above the water? The refractive index of water is 1.33.
above a pool. The light beam is incident on the water surface at an angle 
. What is the radius of the circle formed by the light beam at the bottom of the pool if it is 
deep? The refractive index of water is 1.33.
. The glass has a refractive index of 1.4. What is the angle of refraction of the light as it enters the glass?
strikes the surface of a glass block and undergoes refraction as it enters the block. The diagram shows a ray of this light before and after it enters the block.
