Making assumptions is a good idea, since doing so helps to simplify the complex world and make it easier to understand.
If a medium has a critical angle for total internal reflection from the medium to vacuum as 90°, what is the velocity of light in the medium? (Take c =...
Which of the following instrument is used to measure heat radiation?
One kilogram of ice at 0° C is mixed with one kilogram of water at 85° C. The final temperature of the mixture is
(Tale specific heat of ...
What is the SI unit of power?
‘Lubb-dupp’ sound is produced due to the action of
The wavelength produced by a He-Ne laser corresponds to the transition in:
Which of the following statement is correct?
I. Value of ‘g’ is higher at poles than equator
II. Weight of an object at moon is 1...
What is the electrical charge of a neutrino?