TEST 1

Magnification has a plus sign, then the image is                                                                                            

• Virtual and erect                   

•       Real and erect

• Real and inverted                  

•      At infinity

The magnification of mirror is negative, the image is

• Smaller than the object         

•         Larger than the object

• Erect                                         

•   Inverted

The radius of curvature of a plane surface is ________

• Zero

• Infinite

The line joining  $C_1$  &  $C_2$  is called principal axis. Like wise the mid point of a thin lens is called_____ 

• Pole

• Optic centre

Where is the object placed in front of concave mirror to get virtual image?

• Between mirror and F

• On focal point

• Between F and C

• On C

Which of the following mirrors is used by Archimedes to burn the ships?

• Bi-concave

• Bi-convex

• Concave

• Convex

A convex mirror

• Curves inwards

• Curves outwards

• Curves sideways

• Curves in multiple directions

Silver or Aluminium coated mirror's________

• absorb light

• allow light to pass through

• refract light

• reflect light

Where is the object placed to get a same size of image and is inverted?

• Between P and F

• On F

• Between F and C

• On C

A student observed the image of an object placed in front of a plane mirror. He wrote the properties of the image of an object. Which of the following is wrong?

• Image is virtual and erect

• The size of the image is equal to size of the object

• Image is laterally inverted

• Distance of the image behind the mirror is greater than the distance of the object from the mirror