Physics General Knowledge Questions and Answers

1. In which of the following cases lies the broadcast band of FM?
  A.  VHF
  B.  UHF
  C.  SHF
  D.  HF
Answer
Ans: C
SHF
2. Stars are twinkling due to
  A. Scattering
  B. Refraction
  C. Diffraction
  D. Reflection
Answer
Ans: B
Refraction
3. Laser is a device for producing
  A.  Spontaneous radiation
  B.  Stimulated radiation
  C.  Scattered radiation
  D.  Dispersed radiation
Answer
Ans: B
Stimulated radiation
4. Which of the following is the smallest unit of length?
  A.  Micrometer
  B.  Fermimetre
  C.  Angstrom
  D.  Nanometer
Answer
Ans: B
Fermimetre
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