Question

SUN ,STARS AND FIREFLY ARE EXAMPLES OF__________ SOURCES OF LIGHT. *

NATURAL
ARTIFICIAL
BOTH

THESE ARE TRANSLUCENT OBJECTS- *

BUTTER PAPER,WOOD,TRACING PAPER
TISSUE PAPER, CARD BOARD, OIL
OIL,BUTTER PAPER, TISSUE PAPER

WHEN SOURCE OF LIGHT IS BEHIND THE OBJECT,THE SHADOW SIZE WILL BE_________ THAN THE OBJECT. *

LARGER
EQUAL
SMALL

AN EVENT IN WHICH THE SUN APPEARS TO HAVE DISAPPEARED PARTIALLY OR COMPLETELY FOR A SMALL TIME- *

LUNAR ECLIPSE
SOLAR ECLIPSE
REFLECTION

THE THIN ELECTRIC WIRE INSIDE AN ELECTRIC BULB IS *

FILAMENT
TERMINAL
FIBER
INSULATION

THE SOMETHING WHICH CAN CHANGE ITS SHAPE AND SIZE,AND MAY APPEAR AND DISAPPEAR ANYWHERE /ANYTIME,IS KNOWN AS- *

IMAGE
SHADOW
BEAM OF LIGHT
REFLECTOR OF LIGHT

We can get clear water from muddy water by filtration process . The impurities that remain on the filter paper is called - *

residue
filtrate
crystal
sediment

PINHOLE CAMERA PRODUCES IMAGE THAT IS- *

INVERTED AND DIMINISHED
INVERTED AND BIGGER THAH THE OBJECT
ERECT AND DIMINISHED
VIRTUAL AND ERECT

REFLECTION OF LIGHT FROM SHINING SURFACE IS CALLED-

DIFFUSED REFLECTION
REGULAR REFLECTION
IRREGULAR REFLECTION
NONE

THECOMBINATION OF ELECTRIC CELL IS CALLED A ___________________ *

BATTERY
TERMINAL
CIRCUIT

THE INSIDE OF ELECTRIC BULB IS FILLED WITH AN INERT GAS LIKE ARGON OR NITROGEN - *

TO SAVE THE FILAMENT

FROM BURNING OUT

TO SAVE THE BULB FROM
COLLAPSING

BOTH OPTION 1&2

0NLY OPTION 1​

Answer 1

1. Natural

2. Wood and Cardboard

3. Larger

4. Solar eclipse

5. Filament

6. Shadow

7. Residue

8. Inverted and Diminished

9. None

10. Battery

11. Both option 1&2

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Answer 2

Answer:

• Natural
• Oil, butter paper, tissue paper
• larger
• solar eclipse
• filament
• shadow
• residue
• inverted and diminished
• none
• battery
• Both option 1&2

Explanation:

• The sources that produce light without human involvement are termed natural sources of light. Thus, the sun, stars, and fireflies are natural sources of light.
• oil, butter paper, and tissue paper are translucent as light only passes partially through them.
• When the light source is behind the object, it blocks more light, hence, the shadow size will be larger than the object.
• During the solar eclipse, the sun, moon, and the earth are aligned in the same plane, thus the sun appears to have disappeared for a short interval of time.
• The small thin wire present in an electric bulb made up of tungsten is termed filament.
• The shadow is something that may appear or disappear anywhere at any point in time and has the ability to change its shape and size based on the height of the object.
• The residue is the impurity that remains after the process of filtration on the filter paper.
• The pinhole camera produces a real, inverted, and diminished image.
• The bouncing back of light rays from the surface of the shining surface is called the reflection of light.
• The device that contains a series of electric cells is called a battery.
• The electric bulb is filled with inert gas inside in order to prevent the decaying of filament. The gases like argon or nitrogen are used.