1. In light of the polarization of the incident light waves , it proves that -
(A ) acute
( B ) progressive
( C ) the transverse
( D ) Longitudinal
2 . Why dry sand appears shiny ?
( A) It is an optical illusion
( B ) reflection because the
( C ) due to refraction
( D ) The reason is scattering
3 . 1.5 m tall person needs to see his entire image would be the minimum length of the mirror ?
(A ) 1.5 m
( B ) 0.75 m
( C ) 3 m
( D ) 2 m
4 . What kind of energy is stored in dry cell ?
(A ) electrical energy
( B ) chemical energy
( C ) thermal energy
( D ) None of these
5 . The fuse wire is made of what ?
(A ) Copper and iron
( B ) Copper and lead
( C ) lead and tin
( D ) lead and copper
Answer
( 1 ) c
( 2 ) b
( 3 ) b
( 4 ) b
( 5 ) c
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