For total internal reflection to take place, the angle of incidence must be ______ than critical angle and the light should travel from ______ to ______ medium
An electron and proton are placed a distance r apart in air the ratio of the electro static force to gravitational force between them is of the order of
If a light of λ = 588 nm falls on half silvered glass plate in Michelson s interferometer if movable mirror is moved through 0.233 mm the number of fringes will be observed to shift
Ratio of moment of inertia of two objects A and B is 2:3 which of the following is the ratio of torques of A and B respectively. If both are being rotated with constant angular acceleration
A tank containing water has an orifice in one vertical side. If the centre of the orifice is 10 m below the surface level in tank, then velocity of efflux is
In a spectrometer experiment monochromatic light is incident normally on a diffraction grating having 4.5 x 105 lines per meter.The second order line is seen at an angle of 30 to the normal what is the wavelength of the light?
Two charges are separated by 0.5 m. Now the 0.25 m distance between the two charges is reduced to half of the first distance, how would the electric force become
A science student takes 100 observations in an experiment Second time he takes 500 observations in the same experiment By doing so the possible error becomes
A snooker ball moving with velocity v collides head on with another snooker ball of same mass at rest. If the collision is elastic, the velocity of second snooker ball is
Increased awareness of environment issues has led chemist to develop products and processes that do not impact on the environment in terms of pollution or depletion of sources. To help chemist to achieve this aim, some principles are drawn, which one is not the guiding principle
CFC's are known to cause depletion of ozone layer therefore their use has been banned in refrigerators and air conditioners. Which alternate compound may be suitable to replace CFC
Lipids are naturally occurring compounds produced in cell and are water insoluble but soluble in organic solvents. One of the followings is not a lipid. Select among the following
In many countries plastic waste is collected separetaly and sorted.Some of this is incinerated to provide heat for power stations. Why is pvc polyvinylchloride,removed from any waste that is to be incinerated?
