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Light, Shadows and Reflections

This test covers concepts of Light, Shadows and Reflections.

15 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

Objects which do not allow light to pass through them are called ______________ objects.

  1. luminous
  2. non-luminous
  3. opaque
  4. transparent
  5. translucent
Question 2 Multiple Choice (Single Answer)

____________ objects are those objects which emit or give out light of their own.

  1. Transparent
  2. Translucent
  3. Opaque
  4. Luminous
  5. Non-luminous
Question 3 Multiple Choice (Single Answer)

_____________ objects allow light to pass through them partially.

  1. Opaque
  2. Transparent
  3. Translucent
  4. Luminous
  5. Non-luminous
Question 4 Multiple Choice (Single Answer)

If you are able to see clearly through an object, it is allowing light to pass through it and is __________.

  1. transparent
  2. translucent
  3. opaque
  4. luminous
  5. non-luminous
Question 5 Multiple Choice (Single Answer)

Moon is an example of ___________ object.

  1. luminous
  2. non-luminous
  3. transparent
  4. translucent
  5. none of the above
Question 6 Multiple Choice (Single Answer)

Light travels in a ______________.

  1. curved path
  2. straight line
  3. zig-zag manner
  4. all of the above
  5. none of the above
Question 7 Multiple Choice (Single Answer)

The following is/are required for the formation of shadows:
(a) Source of light
(b) Opaque object
(c) Screen

  1. (a) and (b)
  2. (b) and (c)
  3. (a) and (c)
  4. (a), (b) and (c)
  5. None of the above
Question 8 Multiple Choice (Single Answer)

____________ are formed when an opaque object comes in the path of light.

  1. Images
  2. Reflections
  3. Shadows
  4. None of the above
  5. All of the above
Question 9 Multiple Choice (Single Answer)

_________ reflect light so that we can see images of ourselves.

  1. Torches
  2. Lenses
  3. Mirrors
  4. Cameras
  5. Telescopes
Question 10 Multiple Choice (Single Answer)

__________ use reflections to see around corners.

  1. Microscopes
  2. Telescopes
  3. Mirrors
  4. Cameras
  5. Periscopes
Question 11 Multiple Choice (Single Answer)

The shape of the shadow of an object is dependent on __________________.

  1. the colour of the object
  2. the colour of the light
  3. the colour of the screen
  4. the orientation of the object with respect to beam of light
  5. all of the above
Question 12 Multiple Choice (Single Answer)

During a lunar eclipse, we see a part of the earth's shadow on the surface of the moon. This happens when the earth, the sun and the moon are in a straight line __________________.

  1. with the moon between the sun and the earth
  2. with the sun between the earth and the moon
  3. with the earth between the sun and the moon
  4. on a full moon night
  5. all of the above
Question 13 Multiple Choice (Single Answer)

If the distance of the object from the source of light is decreased, the size of the shadow ________, provided the distance between the source of light and the screen is constant.

  1. decreases
  2. increases
  3. does not change
  4. none of the above
  5. all of the above
Question 14 Multiple Choice (Single Answer)

Which of the following is/are luminous?
(a) Sun
(b) Moon
(c) Firefly
(d) A lighted torch

  1. (a), (b) and (c)
  2. (a), (c) and (d)
  3. (b), (c) and (d)
  4. (a), (b) and (d)
  5. All of the above
Question 15 Multiple Choice (Single Answer)

_________ is the bouncing back of light when it strikes a smooth surface, like a mirror.

  1. Reflection
  2. Refraction
  3. Conduction
  4. Insulation
  5. None of the above
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