light class 7th

The path of the light is

• always a straight line

• a curved line

• a zig-zag line

• depends on the medium

Which one shows lateral inversion?

• Plane mirror

• Convex mirror

• Concave mirror

• All of these

Image formed by a plane mirror is

• virtual and erect

• real and erect

• virtual and inverted

• real and inverted

Boojho and Paheli were given one mirror each by their teacher. Boojho found his image to be erect and of the same size whereas Paheli found her image erect and smaller in size. This means that the mirrors of Boojho and Paheli are, respectively

• plane mirror and concave mirror

• concave mirror and convex mirror

• plane mirror and convex mirror

• convex mirror and plane mirror

Which of the following can be used to form a real image?

• Concave mirror only

• Plane mirror only

• Convex mirror only

• Both concave and convex mirrors

If an object is placed at a distance of 0.5 m in front of a plane mirror, the distance between the object and the image formed by the mirror will be

• 2 m

• 1 m

• 0.5 m

• 0.25 m

You are provided with a concave mirror, a convex mirror, a concave lens and a convex lens. To obtain an enlarged image of an object you can use either

• concave mirror or convex mirror

• concave mirror or convex lens

• concave mirror or concave lens

• concave lens or convex lens

An erect and enlarged image can be formed by

• only a convex mirror

• only a concave mirror

• only a plane mirror

• both convex and concave mirror

Which of the following is used as a side view mirror?

• Plane mirror

• Concave mirror

• Convex mirror

• Convex lens

A virtual image

• can be formed on the screen

• cannot be formed on the screen

• is formed only by the plane mirror

• is formed only by the convex mirror