Convex mirrors are used as driving mirrors because images formed are
erect, Virtual and diminished
erect, real and diminished
erect, virtual and magnified
inverted, virtual and diminished
Correct answer is A
No explanation has been provided for this answer.
The differences observed in solids, liquids and gases may be accounted for by
their relative masses
their melting points
the spacing and forces acting between the molecules
the different molecules in each of them
Correct answer is C
No explanation has been provided for this answer.
The process whereby a liquid turns spontaneously into vapour is called
regelation
evaporation
boiling
sublimation
Correct answer is B
No explanation has been provided for this answer.
Electrical appliances in homes are normally earthed so that
a person touching the appliances is safe from electric shock
both the a.c. and d.c. sources can be used
the appliances are maintained at a higher pd than the earth
the appliances are maintained at a lower pd than the earth
Correct answer is A
No explanation has been provided for this answer.
no charge and a zero potential
a positive charge and a zero potential
a negative charge and a positive potential
a negative charge and a negative potential
Correct answer is D
No explanation has been provided for this answer.