Question
What was the recorded reduction in indoor temperature
using heat-reflective paint in the Ambattur pilot school?Solution
The pilot project in a government school in Ambattur showed that the cool roof technique using white paint reduced indoor temperatures by 1.5–3°C.
Which physical quantity is conserved in a collision (in the absence of external forces)?
A sample contains equal numbers of two isotopes X and Y, each with half-lives of 10 days and 20 days respectively. What is the ratio of activities Aₓ ...
Which one of the following is not a function of the liver?
________ are the elements of group 18.
The emission of a beta-minus particle from a nucleus results in:
A metallic conductor of circular cross-section has radius R. If current density varies as J = Jₒ(1−r/R), the total current through the conductor is:...
The distance between the focus and the centre of curvature of a spherical mirror in terms of the radius of curvature R, is equal to:
Which Bohr orbit of Li²⁺ has the same energy as the ground state of hydrogen?
A body is projected vertically upwards with a velocity of 98 m/s. The time interval during which it is at a height greater than 392 m is:
(Take g...Who laid the foundations of Quantum Theory?
