Chapter 6

• The Refractive index of air > the refractive index of water

• The speed of light in air > the speed of light in water

• The optical density of air > the optical density of water

• The wavelength of light in air > the wavelength of light in water

• A

• B

• C

• D

• A

• B

• C

• D

• A

• B

• C

• D

• A

• B

• C

• D

• A

• B

• C

• D

The focal length of a concave mirror is f. What are the characteristics of image if an object is placed 1.5f from mirror?

• Real and diminish

• Virtual and magnified

• Real and inverted

• Virtual and diminished

• A

• B

• C

• D

• A

• B

• C

• D

In which of the following mirrors are the images always virtual and diminished?

• Convex mirror

• Plane mirror

• Concave mirror