Science 1 Marks Question

Suppose you view the tree shown in through a pinhole camera. Sketch the outline of the image of the tree formed in the pinhole camera.

Suppose you are given a tube of the shape shown in the Fig. and two plane mirrors smaller than the diameter of the tube. Can this tube be used to make a periscope? If yes, mark where you will fix the plane mirrors.

Which of the following are luminous objects?
Mars, Moon, Pole Star, Sun, Venus, Mirror

Does a pinhole camera form an erect image?

What does the formation of shadows prove about the nature of light?

How are we able to see an object which are not self-illuminating like a book or chair?

How many mirrors are used in a Kaleidoscope?

Name the form of energy which produces a sensation of vision.

What is a pinhole camera?

What are the characteristics of a shadow?

What is reflection of light?

Give some examples of non-luminous objects.

Name one area where a periscope is used.

What do we call materials that allow some light to pass through?

Define shadow.

What type of image is formed on the screen by a pinhole camera?

Observe the diagram given below. What does the following activity depict?

What is shadow? How does the colour of an opaque object affects the colour of the shadow?

What is the use of kaleidoscope?

What is lateral inversion?

Why is the moon not considered as a luminous body?

What types of objects do not cast shadows?

Observe the picture given in Fig. A sheet of some material is placed at position ‘P’, still the patch of light is obtained on the screen. What is the type of material of this sheet?

State the principle behind the working of a pinhole camera.

Three torches A, B and C shown in Fig. are switched on one by one. The light from which of the torches will not form a shadow of the ball on the screen.

Give one example of natural source of light.

What is light?

You have 3 opaque strips with very small holes of different shapes as shown in Fig. If you obtain an image of the Sun on a wall through these holes, will the image formed by these holes be the same or different?

How does the light travel?

How many mirrors are used in Periscope?

Where is the image formed by a plane mirror?

Can we see an image of an object only in a mirror or are there some other ways as well?

In a mirror, I can also see my face. Is that also due to the reflection of light?

When the opaque object was a shiny object like a polished steel plate, I got a shadow on the screen, but I also saw that there was a bright spot of light on the wall on the opposite side. Why was it so?

What happens when an opaque object blocks the path of light?

What does a periscope help us see?

Name the three things needed to form a shadow.

What is reflection?

What kind of image does a pinhole camera form?

What does lateral inversion mean?