Light Shadow and Reflection Science Quiz

Which of the following images are real?

• Image formed on the screen of cinema hall.

• Image formed by a concave mirror.

• Image formed by a pinhole camera.

• All the above

An incident ray falling normally on a plane mirror then angle of incidence is:

• 0 degrees

• 120

• 90

• 60

Which of these is not a part of a pinhole camera?

• Box

• Lens

• Tiny hole

• None of these

A shadow is formed when

• light from a luminous object reaches our eyes.

• light from a luminous object reaches our eyes after reflection

• light from a luminous object is prevented from reaching our eyes by another object.

• light from a luminous object reaches our eyes after passing through a transparent object.

Imagine if you close your eyes while looking towards bright sunshine. Then, you cover the eyes with your palm still keeping them closed. Would you notice any difference? On the basis of this experience, state whether your eyelids are transparent, translucent or opaque.

• Transparent

• Translucent

• Opaque

What is the property which helps us to see the Moon.

• Rectilinear Propagation of light

• Refraction

• Reflection

How was the quiz?

• Nice, I loved it

• It was fine

• I hated it

• I hated it cause I lost

Light is

• (a) visible and also makes objects on which it falls visible.

• (b) invisible but makes objects on which it falls visible.

• (c) invisible but becomes visible when it falls on an object.

• (d) sometimes visible and sometimes invisible but it always makes objects on which it falls visible.

Answer explanation

Light is invisible by itself but makes visible the objects on which it falls.