MCQ4ALLCLASS

Author name: ARUN KUMAR

SOLID STATE

12th Chemistry ,Chapter :- 1 ( Solid State ) (1) The number of atoms in a body centred cubic (bcc) unit cell of a monoatomic elementary substance is equal to: (a) 1 (b) 2 (c) 3 (d) 4 (b) 2 Answer (2) An atom at the corner of a unit cell contributes to the unit …

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ELECTROMAGNETIC WAVES

12th Physics , Chapter-6 ( ELECTROMAGNETIC WAVES )   (1) What feature of electromagnetic waves led Maxwell to conclude that light itself is electromagnetic wave: (a) travelling in vacuum (b) travelling in st. line (c) diffracted by an obstacle (d) None of these (a) travelling in vacuum Answer   (2) Which of the following has …

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ALTERNATING CURRENT

12th Physics ,Chapter-5 ( ALTERNATING CURRENT )   (1) Wattles current is obtained in a circuit containing- (a) Inductor (b) Capacitor (c) Both (a) & (b) (d) None (c) Both (a) & (b) Answer   (2) AC generator works on the principle of- (a) Self induction (b) Photoelectric effect (c) Mutual induction. (d) None of …

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