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1. Einstein’s Photo electric equation :
A hν = ½mv2 + W
B hν = ½mv2 – W
C hν = ½mv + W
D hν = ½mv – W
2. Kepler’s third law of planetary motion :
A V0= √Rg
B F = – F
C r∝ T3
D r3 ∝ T2
3. One among the following is doping material in P-type semiconductor :
A Carbon
B Indium
C Arsenic
D Phosphors
4. Escape velocity of the rocket depends on :
A Mass of the rocket
B Mass of the satellite
C Radius of the earth
D Speed of the rocket
5. Fronhoffer’s spectral lines are also called :
A Line absorption spectra
B Line emission spectra
C Continuous spectra
D Continuous emission spectra

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