Q. ____ makes things visible in a dark room.
Q. An __ is visible to us when light falls on it.
Q. The __ is the main source of light for our planet
Q. Stars are ____ sources of light.
Q. Sun is _____ sources of light.
Q. The Sun has enormous amount of____.
Q. Burning candle is an example of____ source of light.
Q. Oil lamp is an example of____ source of light.
Q. Tube-light is an example of____ source of light.
Q. Artificial source of light enable us to see objects during___ time.
Q. Tube-light is ____ source of light.
Q. In a ___ eclipse, the shadow of the Earth falls on the moon.
Q. Lunar eclipse occurs on a ___ moon day
Q. Light is a form of____.
Q. The bodies which produce their own light.
Q. The bodies which do not produce their own light.
Q. The object which allow the light to pass through them completely.
Q. The object which allow only a part of light to pass through them.
Q. The objects which do not allow the light to pass through them at all.
Q. Clear glass is a transparent object.
Q. Frosted glass is a transparent object.
Q. Clean water is a transparent object.
Q. Tracing paper is a transparent object.
Q. Wax paper is a translucent object.
Q. Chart paper is a transparent object.
Q. Oil paper is a translucent object.
Q. Wood is a translucent object.
Q. Notebook is an opaque object.
Q. Chalk is a translucent object.
Q. Light travels in a ________ line .
Q. Gold is a translucent object.
Q. The partial dark portion of the shadow is called _________
Q. The completely dark portion of the shadow is called ________.
Q. Cellophane paper is an example of___.
Q. Shadows are formed when light falls on an transparent object.