Q31,paper 3,J 13. Images tend to be very large collection of data. The size of memory required for a 1024 by 1024 image in which the colour of each pixel is represented by a n-bit number, (in an 8 bit machines) is

(A) n ×8 MB

(B) n / 8 MB

(C) (1024 ×1024) / 8 MB

(D) 1024 MB

Answer B.

Explanation.

1MB=1024*1024.

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Size of image.1024*1024 pixels.

1 pixel takes n bits

1024*1024 pixels takes 1024*1024*n bits.

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8 bits make I unit of memory.

1 bit make 1/8 unit of memory.

n MB need  n MB/8 unit of memory.