ICSE Class 6 Physics - Light - Test 3 (Advanced)
1. A red pencil is seen on a desk because:
A. It produces its own light
B. It reflects light into our eyes
C. It absorbs sound from air
2. A burning candle flame is called luminous because it:
A. Blocks light completely
B. Allows light to pass through
C. Emits its own light
3. A shiny steel spoon can show a faint image because it:
A. Reflects light
B. Produces darkness
C. Stops gravity
4. Three cardboard sheets have small holes. A candle is seen through them only when the holes are:
A. At different heights
B. In a straight line
C. Covered with paper
5. Which object will form the darkest shadow in sunlight?
A. Clean glass sheet
B. Thin tracing paper
C. Thick cardboard piece
6. A sheet of tracing paper placed before a torch usually forms:
A. A faint shadow
B. No light source
C. A perfectly dark shadow like wood
7. In a torch-shadow experiment, an object is moved closer to the wall and farther from the torch. Its shadow usually becomes:
A. Larger always
B. Smaller
C. Luminous
8. The shadow of the same object can look different when the light source is moved because:
A. The object changes its material
B. The screen becomes transparent
C. The direction of light changes
9. A shadow does not show the colour of an object because it is mainly an area where:
A. Light is blocked
B. Sound is reflected
C. Heat becomes solid
10. The image formed by a plane mirror cannot be caught on a screen because it is:
A. Opaque
B. Virtual
C. Translucent
11. If a candle is kept 20 cm in front of a plane mirror, its image appears:
A. On the mirror surface only
B. 40 cm in front of the mirror
C. 20 cm behind the mirror
12. The word AMBULANCE is written laterally inverted on an ambulance so that drivers can read it correctly in their:
A. Rear-view mirror
B. Speedometer
C. Tyres
13. A clear image is formed by a plane mirror because its surface is:
A. Rough and dull
B. Smooth and polished
C. Soft and porous
14. Light falling on a rough stone surface gets reflected in many directions. This is called:
A. Transparent reflection
B. Luminous reflection
C. Irregular reflection
15. A simple periscope usually contains:
A. Two plane mirrors
B. Two wooden blocks only
C. Two sound sources
16. In a simple periscope, the plane mirrors are usually placed at an angle of:
A. 10 degrees
B. 45 degrees
C. 180 degrees
17. The image formed in a simple pinhole camera is usually:
A. Always erect
B. Always larger than the Sun
C. Inverted
18. A pinhole camera forms an inverted image mainly because light:
A. Travels in straight lines
B. Travels only in circles
C. Does not travel at all
19. Eclipses are natural examples showing the formation of:
A. Sound waves
B. Shadows
C. Friction
20. A rainbow shows that sunlight contains:
A. Only black colour
B. Only sound energy
C. Many colours