Light class 7

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

You are provided with a convex mirror, a concave mirror, a convex lens and a concave lens. You can get an inverted image from

• both concave lens and convex lens

• both concave mirror and convex mirror

• both convex mirror and convex lens

• both convex mirror and concave lens

An image formed by a lens is erect. Such an image could be formed by a

• convex lens provided the image is smaller than object.

• concave lens provided the image is smaller than object.

• concave lens provided the image is larger than object.

• concave lens provided the image is of the same size.