PHYSICS ONE LINER SET 43

PHYSICS ONE LINER SET 43

1. The danger signals are red while the eye is more sensitive to yellow.

2. A TV channel characterized by – Frequency of transmitted signal
 
3. Mechanical energy is countered into electrical energy Microphone
 
4. Who discovered X-Rays? Roentgen
 
5. The process by which sunlight reaches to earth….. Radiation
 
6. The least penetrating power ray is α-rays
 
7. X-rays are …………….. waves. Electromagnetic
 
8. Which scale is used to measure the intensity of earthquake? Richter
 
9. The Unit of noise pollution (level) is decibel
 
10. The use of Decibel unit is …… Intensity of sound