Question : When we see an object, the image on the retina is:

Option 1: Real and inverted

Option 2: Real and erect

Option 3: Virtual and erect

Option 4: Virtual and inverted

Question : If objects appear enlarged and inverted in a rear-view mirror, then which type of mirror is used?

Option 1: Concave

Option 2: Convex

Option 3: Cylindrical

Option 4: Plane

Question : The side mirrors of vehicles are of which type?

Option 1: Convex

Option 2: Concave

Option 3: Plane

Option 4: Inverted

Question : An electric current is expressed by a unit called:

Option 1: Metre

Option 2: Ampere

Option 3: Watt

Option 4: Joule

Question : In IT, associative memory is called

Option 1: virtual memory

Option 2: cache memory

Option 3: content addressable memory

Option 4: main memory