Orientation quiz spie 23

The picture shows which type of reflection?

• Specular

• X-ray

• Diffuse

• Normal

Convex and Concave lens used to correct ______ and ____ respectively

• Myopia, Hypermetropia

• Hypermetropia, Myopia

• Myopia, Presbyopia

• Cataract

The size of the image formed increases as the distance between the object and the lens is _____

• Increased

• Decreased

• Same

A lens is said to be converging if the width of the beam _____ after refraction through it

• Increases

• Decreases

• Same

Critical angle and refractive index are:

• Directly related

• Equal

• Inversely related

• 
  None of these

The optical density of turpentine is higher than that of water while its mass density is lower. Figure shows a layer of turpentine floating over water in a container. For which one of the four rays incident on turpentine in figure the path shown is correct?

• 1

• 2

• 3

• 4

An object of height 1 cm is kept at a distance of 40 cm from a concave spherical surface (R = 20 cm) separating air and glass (μ = 1.33). The location of the image formed is:

• - 32 cm

• + 16 cm

• -18 cm

• + 26 cm

Which has the SHORTEST wavelength and therefore the highest frequency/most energy? Hint: These waves are also used in cancer treatments.

• Gamma Rays

• Radio Waves

• Ultraviolet Rays

• X-rays

How do Fiber Optics work?

• By connecting and transferring energy

• By remitting and subtracting power from other fiber optics

• By using light pulses to transfer data

• By converting sound waves in to binary code

True or False: This diagram shows the correct position of the mirrors so that the light hits the target

• True

• False