1) We cannot see during a fog because of ______
A: internal reflection
B: scattering of light
C: reflection of light
Ans: scattering of light
2) Who is the father of discoveries?
A: Edison
B: Einstein
C: Archimedes
Ans: Archimedes
3) Television was discovered by _______
A: Bohr
B: J.L.Baird
C: Becquerrel
Ans: J.L.Baird
4) Atom bomb is based on _______
A: nuclear fission
B: nuclear fusion
C: artificial radioactivity
Ans: nuclear fission
5) Filament of an electric bulb is made of __________
A: copper
B: iron
C: tungsten
Ans: tungsten
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