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. Which of the statements given above is/are correct? 4 mm while that of DVD is 1.2 mm. Which of the statements given above is/ are correct?

Blu-ray Discs (BD) and DVDs differ significantly in video quality and storage capacity. Statement 1 is correct as DVDs typically support Standard Definition (480p), whereas BD is designed for High Definition (1080p) and even 4K Ultra HD. Statement 2 is also correct; a single-layer BD holds 25GB, which is approximately five times the 4.7GB capacity of a standard single-layer DVD. Statement 3 is incorrect; both BD and DVD share the same physical dimensions, including a standard thickness of 1.2 mm. While the internal construction differs—BD has a thinner 0.1 mm protective cover layer compared to the DVD's 0.6 mm layer to allow the blue laser to focus—the total disc thickness remains identical to ensure compatibility with drive loading mechanisms. Therefore, only statements 1 and 2 are accurate.