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WorksheetsChapter 6_Geometrical Optics
Total questions: 10
Worksheet time: 5mins
In concave mirror, the size of image depends upon
shape of object
size of object
position of object
area covered by object
When light travelling in a certain medium falls on the surface of another medium, a part of it turns back in the same medium. This phenomenon is called
defraction
diffraction
refraction
reflection
The projection or converging lens provides
inverted image
real image
virtual image
inverted and real image
One of the angle of a right-angled prism is
90 °
60 °
45 °
30 °
Concave lens is also called
diverging lens
converging lens
convex lens
none of above
To see dim stars, we use
telescope
endoscope
compound microscope
simple microscope
After refraction by the lens, the ray parallel to the principal axis passes through the
focal point
vertex
optical center
core
A point on the principal axis at the center of lens is known as
principal focus
focal length
optical center
principal axis
[Radius of curvature (R)⁄2] is equal to
focal length(f)
center of curvature
vertex
pole
After reflection from a concave mirror, rays of light parallel to the principal axis converge to a point which is called
pole
center of curvature
focal length
principal focus
