Light is a form of energy that is produced by a:
Luminous objects which produce their own light.
For ex. Sun , etc.
Why do the shadows made by the sun change in size during the course of the day?
Shadows change size during the day because of the position of the Sun. When the Sun is overhead shadows are short. At dusk and at dawn shadows are long.
If a capital letter R is seen in an ordinary plane mirror, what does it look like?
The image of an object formed in the water is:
it is inverted and of the same size
Ishani saw the sun at different positions in the sky at different times of the day. Which one of the following is the cause for her observations?
Which of the following will not form a circular shadow?
When the moon comes in between the sun and the earth in a straight line, then a solar eclipse is formed. The eclipse occurs because of the __________.
In a completely dark room, if you hold up a mirror in front of you, you will see:
Sanchit performed the following experiment: In a dark room, Sanchit took a flashlight, placed a cardboard in front of the flashlight and made a small hole at the centre of the cardboard. Then he switched on the flashlight.
He observed that the light appears to come out from the small hole in a straight line.Conclusion of the above experiment could be:
Butter paper is an example of _______ object.
Deepti is a dentist. She uses a mirror to focus light on the tooth of a patient. Look at the following pictures and find out that what kind of mirror she uses?
Concave mirrors are spherical mirrors with the curved surface facing inwards. Concave mirrors used by dentists are called “Mouth Mirrors”. They provide a clear and magnified image of the tiniest of the things in the mouth and thus help the dentist identify the problem.
If you stand before a plane mirror, your left hand appears right. This phenomenon is:
Lateral inversion is a phenomenon in which left appears to be right and vice versa. It is due to the direction that light follows when it strikes a reflecting surface, generally a mirror.
Shadow is formed due to:
Shadows are formed when something comes into the path of light through which light rays couldn 't pass as light travels in straight line (or rectilinear propagation). It forms on the opposite side of the light source.
Sanchit, Ananya, Ruhi and Rohit are discussing light, shadow and reflection. Choose the incorrect statement.
Three identical towels of green, blue and red colours are hung on a clothesline in the sun. What would be the colour of shadows of these towels?
Look at the two pictures above and choose the correct statement given below.
The image given above depicts:
A pinhole camera is a simple camera without a lens but with a tiny aperture, a pinhole camera – effectively a light-proof box with a small hole in one side. Light from a scene passes through the aperture and projects an inverted image on the opposite side of the box, which is known as the camera obscura effect.
The following picture is an example of a:
There are two imaginary objects A and B. Object A reflects more than object B. Therefore, object A is likely to be _________ object B.
One night, Ahana was sleeping on her terrace. She looked up at the night sky and observed the things she could see. She made a list of the sources of light in night sky. What should she have written down on her list?