Physics MCQs Chapter 15+16 book 2

1.     In an electromagnetic wave the electric field vector E and the magnetic field vector B are

a)     Perpendicular to each other

b)    Parallel to each other

c)     45⁰ to each other

d)    Can be any angle between them

2.     AC current cannot be used for

a)     Producing heat

b)    Producing light

c)     Magnetizing iron

d)    Producing magnetic field

3.     A particle moving in uniform magnetic field has

a)     It momentum changes but total energy remains conserved

b)    Both momentum and total energy remains same

c)     Both changes

d)    Total energy changes but momentum remains same

1.a

2.c

3.a