Question

A new optical disc format known as the Blu-ray Disc (BD) is becoming popular. In what way is it different from the traditional DVD ?  

1. DVD supports Standard Definition video while BD supports high definition video 

2. Compared to a DVD, the BD format has several times more storage capacity 

3. Thickness of BD is 2.4 mm while that of DVD is 1.2 mm. 

Which of the statements given above is/are correct? 

(a) 1 only (b) 1 and 2 only (c) 2 and 3 only (d) 1,2 and 3

Answer 1

(b) Statement 3 is incorrect as the thickness of BD is 1.1 mm while that of DVD is 1.2 mm. The difference lies in capacity so statement 2 is correct. As far as statement 1 is concerned.