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)
A rectangular piece of copper foil of length 42 cm and area 924 cm2 is folded along its width to form a cylinder such that there is only one ...
Journal lists transactions in which order?
Nursing breaks under the Maternity Benefit Act, 1961 must be provided until the child is:
A train can cross a pole in 48 seconds. While if the train increased its speed by 50% then time taken by it to cross 225 metres long platform is 42 seco...
Which of the following is not a part of the Von Neumann architecture?
The United Nations Permanent Forum on Indigenous Issues (UNPFII) is a high-level advisory body established in ________________ .
Three of the following words are alike in some manner and hence form a group. Which word does NOT belong to that group?
According to the Economic Survey 2020 - 21, which one of the following will be India's real GDP growth in the year 2021 - 22 ?
Find the median of 5, 9, 10, 10, 4, 8, 6, 5 and 12.
Consider the following statements regarding Saksham Anganwadi and the Poshan 2.0 initiative: Which of the following statements is/are not correct?
...
