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

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?

Accepted Answer

The correct answer is B because of the following reasons:

Statement 1 is correct. DVDs were designed for Standard Definition SD video, whereas Blu ray Discs were specifically developed to support High Definition HD and Ultra HD video quality.

Statement 2 is correct. A standard single layer DVD holds about 4.7 GB of data, while a single layer Blu ray Disc can hold 25 GB. This means Blu ray has more than five times the storage capacity of a DVD.

Statement 3 is incorrect. Both Blu ray Discs and DVDs have the exact same physical thickness of 1.2 mm. They share the same standard dimensions as a regular CD.

Since only statements 1 and 2 are accurate, option B is the right choice.

Answer

1 only

Answer

1 and 2 only

Answer

2 and 3 only

Answer

1, 2 and 3

Explanation

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