When a beam consists of light rays traveling parallel to each other, then such a beam of light is called
parallel beam of light
divergent beam of light
convergent beam of light
perpendicular beam of light
In which of the following light is responsible for the brightness of our atmosphere?
diffraction
refraction
scattering
reflecting
Which type of mirror is used in box-type solar cooker?
Spherical mirror
Convex mirror
Plane mirror
Concave mirror
The distance between the pole and the principal focus is called,
Radius of curvature
Principle axis
Aperture
Focal length
An observer in the umbra experiences a:
Partial solar eclipse
Total solar eclipse
Partial lunar eclipse
None of these
The distance of the spherical mirror from reflection can takes place is called its
Pole
In spherical mirror, P is denoted by
Principle focus
Principal axis
Plane
Concave mirror act as
Cylindrical mirror
Converging mirror
Rays of light always travel in a straight line.This phenomenon is called
Total internal reflection
Rectilinear propogation
Scattering of light
Diffraction
The darkest part of the shadow is:
Penumbra
Antumbra
Umbra
