CBSE Class 6 - Science - CH11 - Light, Shadows and Reflection (MCQs)

Light, Shadows and Reflections

MCQs

Sun Dial at Jantar Mantar in Delhi.
Do you know it uses the principles of Light and Shadows?
Do you want to make your own Sun Clock (Dial)? See below.

Q1: Objects that emit light on their own are called ___________

(a) Ligth Objects
(b) Luminous bodies
(c) Non-Luminous bodies
(d) Opaque bodies

Q2: Which one of the following is not a luminous object?

(a) lit candle
(b) sun
(c) star
(d) moon

Q3: If we are able to see anything clearly through an object, then such an object is said to be a _______ object.

(a) transparent
(b) translucent
(c) opaque
(d) none of these

Q4: A _______ eclipse occurs when earth comes between sun and moon in a straight line.

(a) solar
(b) lunar
(c) shadow
(d) none of these

Q5: The shape of a shadow depends on which of the following.


(a) shape of the opaque object
(b) colour of screen
(c) colour of the object
(d) all of these

Q6: Shadows are

(a) Always smaller than the opaque object
(b) Always bigger than the opaque object
(c) Remains the same size as opaque object
(d) Can be smaller or bigger than the opaque object


Q7: Which one of the following is a living luminous object?

(a) Sun
(b) Moon
(c) Fire Fly
(d) Burning Candle

Q8: A ________ is an instrument used for observing objects from a hidden position.

(a) telescope
(b) microscope
(c) periscope
(d) kaleidoscope

Q9: The light from the sun reaches the earth in

(a) 8.33 minutes
(b) 8.33 seconds
(c) 18. 33 minutes
(d) 88.33 seconds

Q10: The image formed in pinhole camera is 

(a) Inverted
(b) Erect
(c) both a and b
(d) none of these



Answer:
1. (b) Luminous bodies
2. (d) moon
3. (a) transparent
4. (b) lunar
5. (a) shape of the opaque object
6. (d) Can be smaller or bigger than the opaque object
7. (c) Fire Fly
8. (c) periscope
9. (a) 8.33 minutes
10. (c) both a and b

Want to design your own sun dial? Instructables.com has nice details on how to craft your own sun dial.