-
If a hydrogen atom at rest, emits a photon of wavelength λ, the recoil speed of the atom of mass m is given by: ...
0·0·
-
A parallel sided block of glass of refractive index 1.5 which is 36 mm thick rests on the floor of a tank which is filled with water (refractive index = 4/3). The difference between apparent depth of floor at A & B when seen ...
-
A reflecting surface is represented by the equation Y=frac{2L}{pi }sin left( frac{pi x}{L} ight).~0le xle L . A ray travelling horizontally becomes vertical after reflection. The coordinates of the point (s) where this ray is ...
-
If PSQ is the focal chord of the parabola {{y}^{2}}=8x such that SP=6 . Then the length SQ is ...
