HESI A2 test Physic - Light And Optics

A 2 m tall lamp is placed 1.25 m from a double convex lens that has a focal length of 0.75 cm. What is the image height of the lamp?

-1.2 cm

A 4.5 m tall object is placed 1.4 m away from a convex mirror and has an image height of 3.5 m. What is the image distance?

-1.09 m

A certain material has an index of refraction of 1.33. What is the speed of light in this material?

2.26 x 10⁸ m/s

Chloroform has an index of refraction of 1.44. What is the speed of light in this medium?

2.08 x 10⁸ m/s

If a 1.5 m painting is placed 1.5 m away from a convex mirror that has a focal length of 1.75 m, what is the image distance of the painting?

-10 m

If a particular substance has a refractive index of 2.25, how fast does light travel through it?

1.33 x 10⁸ m/s

If an object is magnified by a factor of 2 in a convex lens and has an image height of 4.5 cm, what is the height of the object?

2.25 cm

If the speed of light is 2.0 x 10⁸ m/s in glass, what is the index of refraction for glass?

1.5

Snell’s law is used to describe which of the following phenomena?

Refraction

The point at which the rays of light converge after passing through a lens is called what?

Focal point

What is the image height of a 6 cm tall box that is placed 1.5 cm away from a convex mirror that has an image distance of 4.5 cm?

-18 cm

What is the speed of light through a medium with an index of refraction of 1.06?

2.83 x 10⁸ m/s

What is the term given to the phenomenon that occurs when light bends as it passes from one medium into another?

Refraction

Which of the following correctly expresses the speed of light in a vacuum?

3.0 x 10⁸ m/s

Which of the following describes a concave lens?

It is a diverging lens

Which of the following describes convex lenses?

They are a converging lens

Which of the following describes the nature of light?

Light behaves as both a particle and a wave

Which of the following is not a way in which light interacts with matter?

Reduction

Which of the following is the term given to the distance between the center of a convex lens and the principal focus?

Focal length

Which of the following types of lenses magnifies an object?

Convex