When the moon comes directly between the sun and the earth, the eclipse formed is:
Solar eclipse
Lunar eclipse
Annular solar eclipse
All of these
Plane mirror are used in
Telescope
Periscope
Joulemeter
None of these
In which of the following mirror are used, Army personnel and scouts use for signalling?
Concave
Convex
Plane
Cylindrical
The biggest and the brightest source of light is the:
Sun
Moon
Earth
Jupiter
A spherical mirror in which the outer surface is reflecting is called a ___________ mirror.
A solar eclipse occur only on a
new moon day
full moon day
gibbous moon
half moon
Wood is an example of
opaque object
transparent object
translucent object
non-luminous objects
An objects are things that does not emit light is called
Opaque objects
Luminous objects
Non-luminous object
Transparent objects
Concave mirror is used in
Solar devices
Car headlights
Dentist's mirror
A single narrow streak of light is called
ray
beam
source
images
