# 6th Class Science Lights and Sound Question Bank

### done Light

• A) luminous object

B) non-luminous object

C) transparent object

D) opaque object

• A) luminous object

B) non-luminous object

C) translucent object

D) transparent object

• A) A light source

B) An opaque object

C) A screen/surface

D) All of the above

• A) sun

B) firefly

C) jellyfish

D) electric bulb

• A) A clear glass slab

B) A milky white plastic

C) Clear water

D) A piece of wood

• A) real

B) virtual

C) eract

D) inverted

• A) A virtual image whose rays originate at the person.

B) A virtual image formed from light that originate behind the mirror.

C) Areal image whose rays appear to originate at the person.

D) A real image whose rays originate behind the mirror.

• A) transparent

B) translucent

C) opaque

D) luminous

• A) They are reflected in the same direction

B) They are reflected in many directions

C) They are absorbed by the surface

D) They pass through the surface and are diffracted

• A) 1.5m

B) 3m

C) 6m

D) 7.5m

• A) (1) only

B) (3) only

C) (1) and (2) only

D) (2) and (3) only

• A) Lighted fluorescent tube

B) Red hot iron bar

C) Sun

D) Trees

• A) Sun

B) Moon

C) Stars

D) All of these

• A) light

B) eyes

C) Both of these

D) None of these

• A) Wooden blackboard

B) Mirror

C) A sheet of glass

D) None of these

• A) Oily paper

B) Aluminium sheet

C) Glass

D) None of these

• A) A.A. Michelson

B) John Dalton

C) Albert Einstein

D) None of these

• A) transparent

B) translucent

C) opaque

D) None of these

• A) a natural source of light

B) an artificial source of light

C) a luminous body

D) Both (a) and (c)

• A) allows most of light to pass through it

B) allows a part of light to pass through it

C) does not allow light to pass through it

D) None of the above is correct

• A) a transparent object is placed between the screen and the source of light

B) an opaque object is placed between the screen and the source of light

C) Both the above are correct

D) None of the above is correct

• A) erect

B) inverted

C) smaller

D) larger

• A) luminous body

B) non-luminous body

C) neither luminous nor non-luminious

D) None of the above is correct

• A) Source of light

B) An opaque object

C) Screen

D) All of these

• A) Yes

B) No

C) Can't say

D) All are incorrect

• A) A rectangular box

B) A circular box

C) Both the above

D) None of these

• A) transparent

B) translucent

C) opaque

D) None of these

• A) Moon

B) Flame of candle

C) Bulb

D) Sun

• A) Oxygen

B) Nitrogen

C) Dust

D) Water Vapours

• A) Iron

B) Silicon

C) Steel

D) Aluminium

• A) chemical Energy to light energy

B) light energy to electrical energy

C) electrical energy to light energy

D) light energy to chemical energy

• A) Non-Luminous

B) Transparent

C) Reflector

D) Opaque

• A) An oily paper is translucent

B) The shadow formed by a coloured object will be coloured

C) Black thick paper is transparent

D) None of the above is correct

• A) Light travels in straight lines

B) Luminous objects emit their own light

C) Both the above

D) None of above

• A) The image formed in a pin hole camera is erect

B) The image formed in a pin hole camera is not erect

C) If we place a transparent object in the path of light the shadow formed will be much clearer

D) None of these is correct

• A) There should be a source of light

B) There should be a screen

C) An opaque substance should be placed between the source of light and screen

D) All of the above

• A) a luminous object

B) a non-luminous object

C) a source of light

D) Both (a) and (c)

• A) emit light during night time

B) emit light during day time

C) emit light of their own during day and night

D) None of the above is correct.

•  Column I Column II A. Lunar eclipse (p) Has colour of the object B. Solar eclipse (q) Always black C. Image (r) Moon between sun and earth D. Shadow (s) Earth between sun and moon.

A) $A\to (s);B\to (p);C\to (r);D\to (q)$

B) $A\to (p);B\to (q);C\to (r);D\to (s)$

C) $A\to (s);B\to (r);C\to (q);D\to (p)$

D) $A\to (s);B\to (r);C\to (p);D\to (q)$

•  Column-I Column-II A. Transparent substance (p) It allows the light to pass through it almost completely B. Opaque substance (q) It emits light of its own C. Luminous object (r) It does not emit light of its own D. Non-luminous object (s) It does not allow light to pass through it

A) $A\to (p);B\to (q);C\to (r);D\to (s)$

B) $A\to (q);B\to (p);C\to (s);D\to (r)$

C) $A\to (p);B\to (r);C\to (q);D\to (s)$

D) $A\to (p);B\to (s);C\to (q);D\to (r)$

• A) non-luminous object

B) luminous object

C) transparent object

D) opaque object

• A) a glowing object

B) a deep sea fish

C) both (a) and (b)

D) neither (a) nor (b)

• A) have their own light

B) are visible when they reflect the light fallen them from luminous objects

C) do not give off light

D) both (b) and (c)

• A) left hand

B) right hand

C) comb is not visible

D) None of these is correct

• A) quite similar

B) quite different

C) can't say

D) All are incorrect

• A) reflection of light

B) bending of light

C) Both the above

D) None of these

• A) Both A and R are true and R is the correct explanation of A.

B) Both A and R are true but R is not the correct explanation of A.

C) A is true but R is false.

D) A is false but R is true.

• A) Both A and R are true and R is the correct explanation of A.

B) Both A and R are true but R is not the correct explanation of A.

C) A is true but R is false.

D) A is false but R is true.

• A) Both A and R are true and R is the correct explanation of A.

B) Both A and R are true but R is not the correct explanation of A.

C) A is true but R is false.

D) A is false but R is true.

• A) Both A and R are true and R is the correct explanation of A.

B) Both A and R are true but R is not the correct explanation of A.

C) A is true but R is false.

D) A is false but R is true.

• A) Both A and R are true and R is the correct explanation of A.

B) Both A and R are true but R is not the correct explanation of A.

C) A is true but R is false.

D) A is false but R is true.

• A) Both A and R are true and R is the correct explanation of A.

B) Both A and R are true but R is not the correct explanation of A.

C) A is true but R is false.

D) A is false but R is true.

• A) Statement (1) is correct while statement (2) is incorrect.

B) Statement (2) is correct while statement (1) is incorrect.

C) Both statements are correct

D) Both statements are incorrect.

• A) erect and enlarged

B) inverted and enlarged

C) erect and diminished

D) inverted and diminished

• A)

B)

C)

D)

• A) Light Energy$\to$Chemical Energy$\to$Potential Energy

B) Potential Energy$\to$Chemical Energy$\to$Kinetic Energy

C) Solar Energy$\to$ Chemical Energy$\to$Kinetic Energy

D) Heat Energy$\to$Electrical Energy$\to$Mechanical Energy

• A) Most of the light passes through

B) Light is reflected in its incident path

C) Most of the light is absorbed and very little is reflected

D) Light is not allowed to pass through

• A) 10m

B) 5m

C) 3.33m

D) 2m

• A) 10 cm/sec

B) 5 cm/sec

C) 20 cm/sec

D) 15 cm/sec

• A) Partial lunar

B) Partial solar

C) Total lunar

D) Total solar

• A) increases

B) decreases

C) remains the same

D) first decreases then increases

• A) larger and fainter

B) smaller and fainter

C) larger and brighter

D) smaller and brighter

• A) right hand

B) left hand

C) depend on distance between girl and mirror

D) depend on size of mirror

• A) reflect

C) refract

D) none of these

• A) Using a solar filter

B) A pinhole filter

C) Binoculars or telescope

D) None of these

• A) Sun, Moon, Earth

B) Moon, Sun, Earth

C) Sun, Earth, Moon

D) None of these

• A) a mirror fixed on your dressing table

B) the side mirror of your car

C) a periscope

D) All of the above

• A) transparent substance

B) opaque substance

C) translucent substance

D) None of these

• A) right hand

B) left hand

C) either right hand or left hand

D) sometimes in right hand and sometimes in left hand

• A) stationary surface of clear water

B) well polished surface of shoes

C) smooth cushion surface

D) All of these

• A) only

B) (ii) only

C) (iii) only

D) and (ii)

• A) it gets reflected and reaches our eye

B) it passes through the object

C) the opaque object sends a signal to our eye that enables us to see the object

D) None of the above is correct

• A) transparent substance

B) transluscent substance

C) opaque substance

D) can't say

• A) transparent

B) transluscent

C) opaque

D) None of these is correct

• A) reflection of light

B) refraction of light

C) shadow formation by opaque objects

D) None of these

• A) Light comes from sun to cloud

B) Light comes from cloud to earth

C) Electric current flows in atmosphere

D) Electric current flows from sun to cloud

• A) Shadows are formed on the same side as the light source

B) Shadows are formed on the opposite side to the light source

C) Shadows give us an exact idea of the shape of the object

D) None of these is correct

• A) A shadow is formed when an opaque object comes in the path of light

B) For the formation of shadow we need and opaque object and a source of light only

C) The colour of shadow of an object will be different when seen in light coming from different sources

D) All the above are correct.

• A) luminous object

B) non-luminous object

C) either luminous or non-luminous

D) None of these

• A) it emits light only during night

B) it does not emit its own light

C) it is visible during night only

D) All the above are correct

• A) allows almost whole of light to pass through it

B) allows light to pass through it only partly

C) through which we can see objects clearly

D) None of the above is correct

• A) light travels in straight lines

B) on passing through a pin hole camera there occurs a lateral inversion in the rays of light

C) light rays get reflected in a pin hole camera

D) None of the above is correct

• A) 1

B) 2

C) 3

D) 4

• A) three fingers

B) four fingers

C) none of these

D) can't say

•  Column I Column II A. Pin-hole camera (p) Forms an inverted image B. Mirror (q) Forms a lateral image C. Periscope (r) Used in U-boats D. Kaleidoscope (s) Makes use of reflection of light

A) $A\to (p);B\to (q);C\to (r);D\to (s)$

B) $A\to (p);B\to (r);C\to (s);D\to (q)$

C) $A\to (q);B\to (p);C\to (r);D\to (s)$

D) $A\to (s);B\to (p);C\to (q);D\to (r)$

•  Column I Column II A. Light (p) Shows that light travles in straight lines B. Luminous object (q) An agent that produces a sensation of sight in us. C. Shadow formation (r) Non-luminous object D. A pair of shoes (s) An object that gives out light of its own

A) $A\to (p);B\to (q);C\to (r);D\to (s)$

B) $A\to (q);B\to (r);C\to (s);D\to (p)$

C) $A\to (q);B\to (s);C\to (p);D\to (r)$

D) $A\to (r);B\to (p);C\to (q);D\to (s)$

• A) umbra

B) penumbra

C) source

D) curved path

• A) umbra

B) penumbra

C) source

D) curved path

• A) Moon

B) Sun

C) Earth

D) All of these

• A) used in U-boats

B) that makes use of reflection of light

C) Both the above

D) None of these

• A) that uses reflections to see around corners

B) that uses the property of light that light travels in straight lines

C) Both the above

D) None of these

• A) Kaleidoscope

B) Periscope

C) Both of the above

D) None of these

• A) Both A and R are true and R is the correct explanation of A.

B) Both A and R are true but R is not the correct explanation of A.

C) A is true but R is false.

D) A is false but R is true.

• A) Both A and R are true and R is the correct explanation of A.

B) Both A and R are true but R is not the correct explanation of A.

C) A is true but R is false.

D) A is false but R is true.

• A) Both A and R are true and R is the correct explanation of A.

B) Both A and R are true but R is not the correct explanation of A.

C) A is true but R is false.

D) A is false but R is true.

• A) Statement (1) and (3) are incorrect while statement (2) is correct.

B) Statement (1) and (2) are incorrect while (3) is correct.

C) All the statements are correct.

D) All the statements are incorrect.

• A) Regular reflection

B) Diffuse reflection

C) Dispersion

D) Refraction

• A) umbra

B) penumbra

C) dark region

D) None of these

• A) Become large

B) Remain same

C) Become small

D) Get distorted