UPSC CSE Prelims 2011 Q69 — Science & Technology PYQ with Answer

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?