Class 6 Science MCQ Light Shadows and Reflection

Question : In sky, earth and moon are:

(a) Opaque
(b) Translucent
(c) Transparent
(d) None of these

Question : Stars are

(a) Non luminous bodies
(b) Luminous bodies
(c) Artificial sources of light
(d) Opaque bodies

Question : Moons and planets

(a) Radiate light energy
(b) Reflect light energy
(c) Absorb light energy
(d) Split light energy

Question : Vacuum is a

(a) Opaque medium
(b) Transparent medium
(c) Translucent medium
(d) Heterogenous medium

Question : Rectilinear propagation of light means

(a) Light travels in straight lines
(b) Light travels in curved path
(c) Light travels in zig-zag path
(d) Light travels in circular path

Question : A non luminous body can be made luminous by

(a) Cooling it
(b) Melting it
(c) Heating it
(d) Evaporating it

Question : The speed of light is

(a) 300,000 km/s.
(b) 300,000 m/s
(c) 30,000 km/s
(d) 30, 000 m/s

Question : 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

Question : A body which emits light by itself is

(a) Luminous body
(b) Non luminous body
(c) Opaque body
(d) Shadow

Question : The star very bright during early evening

(a) Jupiter
(b) Mercury
(c) Venus
(d) Saturn

Question : The size of a shadow of an opaque object close to the screen and away from the source of light

(a) Increases
(b) Decreases
(c) Remains the same
(d) First decreases and increases.

Question : Where is a shadow formed?

(a) In front of the object
(b) On the ground either in front or behind the object
(c) On a screen behind the object
(d) Anywhere and every where

Question : The shadow of a cylinder is a rectangle when light falls in one direction, and a _____ when light falls in the other direction.

(a) Sheet
(b) Line
(c) Circle
(d) None of the above

Question : Shadows are formed because ___.

(a) Light has lot of energy
(b) Light is attracted to a magnet
(c) Light travels in a straight line
(d) Light cannot travel

Question : Sharp Shadow is formed by

(a) Opaque object
(b) Translucent objects
(c) Transparent objects
(d) Any object

Question : In a completely dark room, if you hold up a mirror in front of you, will you see

(a) Your shadow
(b) A sharp shadow
(c) Your image
(d) No image

Question : Air, water, a sheet of polythene are

(a) Transparent
(b) Translucent
(c) Opaque
(d) Luminous

Question : The object which does not have light of its own is

(a) shining mirror
(b) light bulb
(c) star
(d) lighted match box

Question : The speed of light is

(a) 299,792 km/s.
(b) 299,792 m/s
(c) 29,792km/s
(d) 29,792 m/s

Question : The object that emits light is called a:

(a) Light
(b) Shadow
(c) Reflection
(d) Source of light

Question : Objects that do not give out or emit light of their own are called

(a) luminous
(b) non-luminous
(c) opaque
(d) translucent

Question : Stars are

(a) Non luminous bodies
(b) Luminous bodies
(c) Artificial sources of light
(d) Opaque bodies

Question : Which of the following is a cold source of light?

(a) Firefly (Jugnu)
(b) Tube light
(c) The sun
(d) Electric bulb

Question : What is needed to see shadow ?

(a) Source of light
(b) Screen
(c) An opaque object
(d) All of these

Question : The objects which allow light to pass through them are called

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

Question : Wool is a

(a) Transparent medium
(b) Opaque medium
(c) Translucent medium
(d) Optical medium

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

(a) Electric bulb
(b) Burning candle
(c) Firefly (Jugnu)
(d) Oil lamp

Question : Bouncing back of light from shining surfaces is called

(a) Reflection
(b) Refraction
(c) Bending
(d) Dispersion

Question : Those objects give out light of its own are known as:

(a) Opaque
(b) Transparent
(c) Luminous
(d) Translucent

Question : A torch is a

(a) luminous
(b) non-luminous
(c) both of these
(d) none of these

Question : Which of the following is not a luminous object

(a) Unlit candle
(b) Burning gas lantern
(c) Glow worm
(d) Sun

Question : Which letters of English alphabet will not show lateral inversion?

(a) I, O, U
(b) N, Z, X
(c) I, X, E
(d) A, E, I