Light is a form of energy that causes the sensation of
hearing
heat
sight
touch
A lunar eclipse occurs
on a new-moon night
on a full-moon night
when the moon is waxing
on any night
White light is made of
1 colour
3 colours
5 colours
7 colours
Nature of the shadow depends on
the relative distance between the source of light and the object
the relative size of the source of light and the object
the angle between the source of light and the object
all of the above
Umbra is a region of
complete darkness
partial darkness
partial brightness
complete brightness
When an opaque object comes in the path of light it forms
an image with colours
shadow
black and white image
depends on the colour of light
Which of the following is transparent ?
Stone
Wood
Plastic
Glass
Water is
transparent
translucent
opaque
polymer
An image formed by a plane mirror is a/an
Virtual image
Areal image
Inverted image
None of these
Which type of mirror is used in box-type solar cooker?
Spherical mirror
Convex mirror
Plane mirror
Concave mirror
