Tag: light and shadow

Questions Related to light and shadow

A leaf appears green when observed in sunlight because:

  1. It transmits green colour

  2. It absorbs green colour

  3. It disperses all colour, except green

  4. None of these


Correct Option: D
Explanation:

A leaf appears green in sunlight because it absorbs all the wavelength except green which allows only green color rays to reach us.

Gold is an example of a translucent metal. State whether true or false.

  1. True

  2. False


Correct Option: B
Explanation:

Gold is a metal which is an opaque object as it doesn't allow light to pass through it.

Thin glass is a transparent body. State whether true or false.

  1. True

  2. False


Correct Option: A
Explanation:

Thin glass slab acts as a transparent body as it will create very small shift in the emigrant ray which will be negligible .

Select the odd one out w.r.t. transparency (wood, stone, cement, glass)

  1. glass

  2. wood

  3. stone

  4. cement


Correct Option: A
Explanation:

It is a transparent body rest all are opaque

Select the odd one out w.r.t. transparency (air, fog, mist, tissue paper)

  1. air

  2. fog

  3. mist

  4. tissue paper


Correct Option: A
Explanation:

It is a transparent medium rest all are translucent

State whether true or false.
Opaque objects allow light to pass through them.

  1. True

  2. False


Correct Option: B
Explanation:

Transparent objects allow the light to pass through them whereas opaque objects doesn't allow any light ray to pass through them.

State whether true or false:
You can clearly see through a blue-tinted drinking glass.

  1. True

  2. False


Correct Option: B
Explanation:

No since the dispersion of light occurs when we observe things through the blue tinted drinking glass so objects are not so clear.

State whether true or false:
Wood is an example of opaque object.

  1. True

  2. False


Correct Option: A
Explanation:

Since opaque object are objects which doesn't allow any light ray to pass through it and we cannot see through it. For example wood.

In ........................... lens, all the rays diverge after refraction.

  1. Concave

  2. Bi-concave

  3. Convex

  4. Bi-convex


Correct Option: A

An object is transparent if you can see through it clearly.

  1. True

  2. False


Correct Option: A
Explanation:

A transparent substance is defined as the substance through which all light incident on it normally can pass through it.And hence , it can be seen clearly through a transparent substance.


Given statement is $True$.