Physics General Knowledge Questions and Answers

5. The apparatus used to measure the intensity of light is known as
  A.  Anemometer
  B.  Colorimeter
  C.  Altimeter
  D.  Lux meter
Answer
Ans: D
Lux meter
6. Optical fibre works on the principle of
  A.  Refraction
  B.  Scattering
  C.  Interference
  D.  Total internal reflection
Answer
Ans: D
Total internal reflection
7. The mirror used by a dentist to examine the teeth of patients is
  A.  Convex
  B.  Concave
  C.  Cylindrical
  D.  Plane
Answer
Ans: B
Concave
8. Electron beam therapy is a kind of radiation therapy to treat
  A.  Gall bladder stones
  B.  Certain types of cancer
  C.  Kidney stones
  D.  Enlarged prostate gland
Answer
Ans: B
Certain types of cancer
1 2345

Page 2 of 5