How does pupil come in bright light?
(A) big
(B) small
(C) No change
(D) None of these
What type of magnet is used in commercial motors?
(A) Permanent magnet
(B) umbilical magnet
(C) electromagnet
(D) Common rod magnet
Which material rod is often used to make electromagnets?
(A) Steel
(B) malleable iron
(C) Brass
(D) None of these
What is the farthest point of the normal human eye?
(A) is at 25 cm
(B) is at infinity
(C) is at 25 mm
(D) is at 25 m
What is the color that is used in danger signals?
(A) Yellow color
(B) Purple color
(C) Blue color
(D) Red color
The electric bulb has a filament?
(A) Copper
(B) Platinum
(C) Tungsten
(D) None of these
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