Select the odd one out w.r.t. transparency (wood, stone, cement, glass)

A dark patch formed behind an opaque body when the opaque body is placed in the path of a light beam is called an image.

Butter paper is an example for __________ object.

Shadow formation is an example of :

You can clearly see through a blue-tinted drinking glass.

Which objects use the reflection of light?

Incident ray is the ray of light striking a surface.

Incident light falling on a surface is sent back into the same medium. This phenomenon is known as

Three sticks are placed in an open field as shown in figure. Which of the following sticks will form the shadow of equal length? 

You have to cast the shadow of your pencil on the wall with the help of candle in a dark room. How can you obtain a shadow smaller in size than the pencil?

The pinhole camera works on the principle of

The given image shows the working of which optical instrument ?

Geeta placed three objects made of different materials as shown in the figure. She observed a bright spot of light at (II) but (III) would not get any spot. Then,

The color of the shadow of Green ball is:

Read the given statements and select the correct option.
Statement 1: Rahul placed a colored plastic bottle in front of the beam of a torchlight. Then he placed a transparent sheet of the same size on the other side of the bottle. No shadow will form on the screen.
Statement 2: Translucent objects allow light to pass through them partially.

Which diagram best shows the reflection of light?

In the pinhole camera, the light rays from the source are moving through the pinhole and incident on the white screen. This is due to :

The reflection that occurs when a beam of light falls on a smooth surface is called irregular reflection.

When Abhishek looked at a lighted torch through an object he could see a faint glow, but not the torch. The object is

Which surface will  reflect most of the light falling on them ?

Which of the following is a translucent object? 

Which of the following can never form a circular shadow?

The phenomenon related to the reflection of light is 

Which stick is likely to form the $$SHORTEST$$ shadow on the ground?

A student observes a tree given in Fig. through a pinhole camera. Which of the diagrams given in Fig. (a) to (d) depicts the image seen by her correctly?

Which of the following is/are not always necessary to observe a shadow?

Write true or false for statement

Light passes through glass.

If we are able to see anything clearly through an object, then such an object is said to be a ________ object

Study the set-up below. How will the shadow look like?

A man of height h walking away from a lamp post finds his shadow to be equal to his height when he is at a distance x from the lamp post. If the height of the lamp post is H, then x is