light,shadow and reflection,electric circuts

The principle behind the pin hole camera is

• Curvilinear propagation of light

• Rectilinear propagation of light

• Image

• shadow

The dark patches are formed behind the objects are called

• Clear images

• Dark images

• Dim images

• Shadow

Fire fly is a

• Non-living luminous body

• Plant body

• Living luminous body

• Heavenly body

Objects which allow light to pass through them are called

• Opaque objects

• Transparent objects

• Translucent objects

• Image

Which of the following is an example of a translucent object?

• A thin sheet of paper

• A thin glass slab

• A thin iron sheet

• All of these

When an opaque objects comes in the path of light it forms

• An image with colors

• Shadow

• Black and white image

• Depends on the color of light

Bouncing back of light from shining surfaces is called

• Dispersion

• Refraction

• Reflection

• Total internal reflection

which of the characteristics is not exhibited by the shadow of an object?

• erect

• can be formed on screen

• same colour as the object

• can be bigger than the object

A plane mirror form an image of an object because it ........ light from the object

• absorbs

• reflects

• passes

• emits

12.Translucent is?

• When light bounces off an object

• Material that only allows a little light to pass through

• Our main source of light