Exam 26: The Refraction of Light: Lenses and Optical Instruments

A converging lens with a focal length of 12 cm produces a 3-cm high virtual image of a 1-cm high object.Which entry in the table below is correct?

Which one of the following expressions determines the critical angle for quartz (n = 1.5)immersed in oil (n = 1.1)?

The figure is a scaled diagram of an object and a converging lens surrounded by air.Only one focal point,F,of the lens is shown. -At which of the labeled points will the image be formed?

A ray of light propagates in water (n = 1.333)and strikes a sheet of crown glass (n = 1.523).If the angle of refraction in the glass is 35.2°,determine the angle of incidence.

White light enters a glass prism,but the color components of the light are observed to emerge from the prism.Which one of the following statements best explains this observation?

Light that is incident upon the eye is refracted several times before it reaches the retina.As light passes through the eye,at which boundary does the majority of the overall refraction occur?

Which one of the following statements is true concerning the focal length of a lens?

The figure shows a point source of unpolarized light at A inside a uniform transparent crystal. The ray AO in the crystal strikes the plane surface SS' making an angle of 30° with the normal. This angle is the critical angle for transmission into air. -Determine the index of refraction of the crystal.

Light is incident at the Brewster angle on a plastic plate in air.The angle of refraction is 35.0°. -What is the index of refraction of the plastic plate?

A fish swims 2.00 m below the surface of a pond.At what apparent depth does the fish appear to swim if viewed from directly above? The index of refraction of water is 1.33.

A glass block with an index of refraction of 1.7 is immersed in an unknown liquid.A ray of light inside the block undergoes total internal reflection as shown in the figure.Which one of the following relations best indicates what may be concluded concerning the index of refraction of the liquid,?

The figure is a scaled diagram of a an object and a converging lens.The focal length of the lens is 5.0 units.An object is placed 3.0 units from the lens as shown. -The object has a height of 1.5 units.What is the approximate height of the image?

Andrea's near point is 20.0 cm and her far point is 2.0 m.Her contact lenses are designed so that she can see objects that are infinitely far away.What is the closest distance that she can see an object clearly when she wears her contacts?

An object is placed 20.0 cm from a converging lens with focal length 15 cm.A concave mirror with focal length 10 cm is located 75 cm to the right of the lens as shown in the figure.Note: The figure is not drawn to scale. -Which pair of terms most accurately describes the final image?

The figure shows a ray of light that originates in an aquarium.It travels through water,is incident on the glass side,and emerges into the air.Ignore any partial reflections.Note: The figure is not drawn to scale. -Which one of the following figures shows the smallest angle of incidence in the water for which no light emerges into air? Note: Only one figure is physically possible.

A scuba diver shines a flashlight from beneath the surface of water (n = 1.33)such that the light strikes the water-air boundary with an angle of incidence of 37°.At what angle is the beam refracted?

A beam of light passes from air into water.Which is necessarily true?

A fish swims 4.0 m below the surface of a still lake as shown in the figure.When an archer attempts to shoot the fish,the arrow enters the water at point P that is a horizontal distance 1.2 m from the fish. -At which of the numbered positions should the archer aim to hit the fish?

When certain light rays pass from a vacuum into a block of an unknown material,the measured index of refraction of the material is 3.00.What is the speed of light inside the block?

A ray of light is normally incident on face ab of a plastic prism with an index of refraction n = 1.20 as shown. -Determine the largest value of the angle so that the ray is totally reflected at the face ac if the prism is immersed in a liquid with refractive index 1.12.