| 1 |
The speed of sound through air. |
340 meter per secod
1500 meter per second
5000 meter per second
500 meter per second
|
| 2 |
Sound is produced by |
Vibrating object
Transparent object
Opaque object
Translucent object
|
| 3 |
Sound is a type of energy. |
Electrical
Mechanical
Thermal
Chemical
|
| 4 |
____________ light is the reiurs of light when it hits as opaque surface. |
Refraction
Reflection
Dis persion
Echo
|
| 5 |
Light travels. |
In straight line
In the form of wave
From time to time
In the form of zig zag
|
| 6 |
Tissue paper allows it to pass through |
Complete light
Some part of light
Special light
Inadequste light
|
| 7 |
Which things are not transparent objects. |
wood
Metal
Stone
All of these
|
| 8 |
Which things are transparent object. |
Water
Glass
Air
All of these
|
| 9 |
Which things are transparent objects. |
Water
Glass
Air
All of these
|
| 10 |
The object through which light can pass completely. |
Translucent
Opaque
Semi and opaque object
Transparent
|
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