WorksheetsLight class 7
Total questions: 11
Worksheet time: 8mins
The path of light is always straight and never curved.
True
False
May be true or false
None of these
The bouncing of light by any smooth surface, like a mirror, is called
Refraction
Galvanisation
Reflection
None of these
Due to the reflection of light, the impression of an object formed in a mirror is called the ___ of the object
Image
shadow
Light
As the distance of the object from the mirror increases, the distance of the image also ___.
Decreases
Increases
It remains the same
none of these
Images that cannot be captured on a screen are called (a)
As the name suggests, images are inversed, i.e. the right part of an object appears on the left in its images, and the left part of the object appears to the right. This phenomenon is called ___.
Bonding
Pneumonoultramicroscopicsilicovolcanoconiosis ( silicosis )
Refraction
Lateral Inversion
Lens used in spectacles for correction of defects of vision is
Always concave
Concave or convex
Lens of different shape
Always convex
An inverted image can be seen in a convex mirror,
under no circumstances
when the object is very far from the mirror
when the object is at a distance equal to the radius of curvature of the mirror
when the distance of the object from the mirror is equal to the focal length of the mirror
An object of length 5 cm is placed at a distance of 20 cm in front of a plane mirror. The size and position will be
5 cm high and 20 cm behind the mirror
5 cm high and 20 cm in front of mirror
5 cm high and 10 cm behind the mirror
3 cm high and 20 cm behind the mirror
In order to be used as mirrors, glasses are coated with
silver
copper
platinum
aluminium
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