Optics and Light Quiz

What is the speed of light?

• 5 x 10^8 m/s

• 3 x 10^8 m/s

• 2 x 10^8 m/s

• 4 x 10^8 m/s

Which type of object gives out light?

• Transparent object

• Opaque object

• Luminous object

• Non-luminous object

What is the angle between the incident ray and the normal in reflection of light called?

• Reflected angle

• Normal angle

• Angle of reflection

• Angle of incidence

What type of reflection occurs at rough surfaces?

• Regular reflection

• Diffuse reflection

• Clear reflection

• Smooth reflection

What is the characteristic of the image formed by a plane mirror?

• Smaller size as object

• Inverted size as object

• Enlarged size as object

• Same size as object

What is the use of convex mirrors in motor cars?

• Provide a blurry image

• Provide a narrow field of view

• Give an inverted image of an object behind the driver

• Give an erect image of an object behind the driver

What is the use of concave mirrors in reflecting telescopes and microscopes?

• As reflectors

• As driving mirrors

• As shaving mirrors

• As car headlamps

What is the special type of concave mirrors used as car headlamps and searchlights?

• Concave mirrors

• Plane mirrors

• Convex mirrors

• Parabolic mirrors

What is the phenomenon where light bends as it passes from one medium to another?

• Reflection

• Refraction

• Diffraction

• Dispersion

What is the color of light that has the longest wavelength?

• Red

• Blue

• Green

• Violet