One Mark Questions - Chapter 11 Class 6 - Light, Shadows and Reflections

Q1

Why is the pinhole of a pinhole camera kept small?

Answer:

The smaller the pinhole , the smaller and sharper the point of light that the flashlight creates .

Q2

Why should we never look directly at the sun?

Answer:

T he sun radiates ultraviolet radiations that could be extremely harmful for our eyes . This is why we should never see the sun with naked eye.

Q3

The most important source of light for earth is ______

Answer:

The Sun is the major source of light for the earth.

Q4

State whether true or false: A pinhole camera uses Lens to form a real and inverted image

Answer:

Pinhole cameras use a very small hole instead of a lens.

So, the statement is False.

Q5

Name the device which can be used to see things on the other side of a high wall

Answer:

A periscope can be used to see things on the other side of a high wall.

Q6

What is the color of the shadow formed?

Answer:

Irrespective of the colour of the object, the shadow formed is always black.