MIRRORS AND LENSES

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

• real, upright, same               

• virtual, upright, same

• real, inverted, smaller

• virtual, upright, smaller

Which of the following best describe the Law of Reflection?

• The reflected light rays diffuse on even surfaces

• The angle of incidence is greater than the angle of reflection

• The reflected light bounces

• The angle of incidence is equal to the angle of reflection

Two plane mirrors are attached to form a dual mirror system with an adjustable angle. As the angle between the mirrors increases, the number of images _____.

• decreases                     

• increases             

Which of the following is a diverging lens?

• concave lens  

• convex lens           

•   parabolic lens                   

•   plane lens

Which describes a concave lens?

• more transparent in the middle

• thinner in the middle than on the edges

•   thinner on the edges than in the middle

•     triangular in shape.

As per the Law of Reflection measured through the normal line, the angle of  incidence is ____________ to the angle of reflection.

• equal    

• greater than          

• less than               

What type of lens is use to correct nearsightedness?

A spherical mirror with reflecting surface curved inwards is called _______________.

• concave mirror          

• convex mirror         

The reflection by the rough surfaces that tend to reflect light in all directions is called

• diffused reflection     

• glossy reflection     

• regular reflection

• specular reflection

What do we call a device that converts electricity into mechanical movement?