Subject :ICSO Class : Class 5
For which of the following reasons Blu-ray disc provides higher storage capacities than a DVD?
A The data is read by blue violet laser.
B The pits on blu-ray is much smaller than the DVD.
C It is circular in shape.
D Both (A) and (B)
Explanation
Ans 1:
Class : Class 7
It should be both A and B because in blu-ray disc (BD), the data is read by blue- violet laser, hence the name.
Ans 2:
Class : Class 5
Ans 3:
Class : Class 5
Option D is correct
The data is read by much smaller blue violet laser and also the pits on the CD are the largest,of medium size on the DVD and smallest on the Blu-ray disc