Question
Which of the following statement is correct?
>I. Speed of sound in steel is more than the speed of sound in glass. II. Speed of sound in brass is more than helium.Solution
Solids and liquids have higher mass densities (r) than gases. But the corresponding increase in both the modulus (B) of solids and liquids is much higher. The speed of the sound in Steel is 5941 (m s-1) The speed of the sound in Brass is 2,120 (m s-1) The speed of the sound in Helium is 965 (m s-1)
The DPI@2047 roadmap outlines a two-phase strategy. DPI 2.0 (Realising Aspiration) is focused on which period?
Which country signed an FTA with India in May 2025, estimated to boost bilateral trade by £25.5 billion annually by 2040?
How many groundwater recharge structures were reported as completed under the Jal Sanchay Jan Bhagidari initiative?
What was the average number of daily UPI transactions reported as of September 2025?
The Mumbai Metropolitan Region Development Authority (MMRDA) recently signed an agreement with which company to provide financial support of over Rs 850...
What percentage of the Great Barrier Reef's surveyed reefs showed a decline in coral cover in the latest AIMS study?
What is the primary aim of the Memorandum of Understanding (MoU) signed between the Indian Navy and M/s Uber?
Consider the following statements about the V. Shantaram Lifetime Achievement Award:
1. It is awarded for contributions to feature films.
...
Which private firm delivered the first centre fuselage for LCA Tejas Mk1A to HAL?
What is the name of the new plant species discovered in the Agasthyamala Biosphere Reserve, Kerala?
