The X-ray beam coming from an X-ray tube (a) is monochromatic

As per the laws of reflection  The angle of incidence ∠i = angle of reflection ∠r  Here as given ∠i + ∠r = 90°  ∴ ∠i + ∠i = 90 °  or ∠i =...

Time taken by the laser beam to return to Earth after reflection from the Moon = 2.56 s Speed of light = 3 × 108 m/s Time taken by the laser beam to...

The correct answer is (b) 10√2 cm Explanation:  When the tube is inclined, the vertical rise remains the same. So the water in the inclined tube rises to 10*sec45° =10√2 cm.

(a) the kinetic energy of the striking electron

(a) Absent wavelength 25pm. 

(d) The X-ray passing through the same foil will be > 50%.

(d) The thickness of aluminium foil, which will allow 50% of the X-ray to pass through, will be > 0.1mm.

(b) accelerating voltage

Let for, k series emission the potential required = v  The energy of electrons = ev This amount of energy ev = energy of L shell The maximum potential difference that can be...

λ  = 663 x 10–9 m,  θ= 60°, n = 1 x 1019, λ = h/p => P = p/λ = 10–27 Force exerted on the wall = n(mv cosθ –(–mv cosθ)) = 2n mv cos θ. = 2 x 1 x 1019 x 10–27...