Science Quiz | General Knowledge Multiple Choice Questions and Answers | Page-20

Questions

96 Persons suffering from myopia are advised to use

A plano-concave lens

B convex lens

C concave lens

D plano-convex lens

Answer: Option [C]

97 The device used for locating submerged objects under sea is

A radar

B sonar

C laser

D all of the above

Answer: Option [B]

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98 A device which is used to limit the current in an electrical circuit is called a

A fuse

B grid

C conductor

D none of the above

Answer: Option [A]

99 A transformer

A converts DC to AC

B converts AC voltage to DC voltage

C converts electrical energy into mechanical energy

D is used to decrease or increase AC voltage

Answer: Option [D]

100 Eclipses occur due to which optical phenomena ?

A refraction

B diffraction

C reflection

D rectilinear propagation

Answer: Option [C]