computer question,physics question

1.how much data can hold jazz disk?

        512 MB of data

2.In computer processor each machine cycle consists of four operations they are?

  

       a)fetch b)decode c)execute d)store

3. Soft iron is an ideal material for electromagnets because it ?

          Exibits maximum flux density

4.match the following:

a)      Convex lens                       1.dispersion

b)      Concave lens                     2.long sight    

c)     Prism                                  3.virtual image

d)    Mirror                                 4.short sight          

Ans: a)=2, b)=4,c)=1,d)=3

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