Light travels in

• straight line

• curved line

• zig-zag line

• randomly

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

• an image with colours

• depends on the colour of the light

• black and white image

• shadow

Which types of objects do not allow light to pass through them?

• Translucent

• Opaque

• Transparent

• all the above

Which is an example of a translucent object?

• cellophane paper

• cardboard

• butter paper

• clear glass

Bouncing back of light from shining surfaces is called

• Reflection

• Refraction

• Bending

• Rectilinear propagation

Which is a device used to see the image of the sun?

• Plane mirror

• Pinhole camera

• A straight pipe

• Glass slab

Out of these, which one is not a man-made luminous body?

• Electric bulb

• Burning candle

• Firefly

• Oil lamp

A mirror is an example of

• transparent object

• opaque object

• translucent

• none of these

Which one of the following is the natural source of light?

• Electric bulb

• Moon

• Tube light

• Sun

Image formed by a pinhole camera is

• inverted

• erect

• sometimes erect, sometimes inverted

• none of these