Question

WEDNESDAY
( sqrt{22} )
we thow ( v quad Delta E=frac{h c}{lambda} )
( begin{aligned} &=lambda r frac{6 cdot 6 times 10^{-3} times 8 times 10^{8}}{8 times 10^{-8}} &+6.64 times 10^{-18}+6.64 times 10^{-6} cdot mathrm{A} end{aligned} )

# (i) 32Ge (iii) 34 Se (1) (ii) & (iii) (3) (ii) & (iv) (ii) 33 As (iv) 78 Se (2) (i) & (ii) (4) (ii) & (iii) & (iv) o In 14N if mass attributed to electrons were doubled & the mass attributed to protons were halved, the atomic mass would become approximately :- (1) Halved (2) Doubled b in 14 - 10.5 (3) Reduced by 25% (4) Remain same The value of planck's constant is 6.63 x 10-34 Js. The velocity of light is 3.0 x 108ms-1. Which value is closest to the wavelength in metres of a quantum of light with frequency of 8 x 1015 5-1 ? (1) 3 x 107 (2) 2 x 10-25 (3) 5 x 10-18 (4) 3.75 x 10-8 If change in energy (AE) = 3 x 10-8 J, h = 6.64 x 10-34 J-s and c = 3 x 108 m/s, then wavelength of the light is :- (1) 6.64 x 103 Å (2) 6.64 x 105 Å (3) 6.64 x 10-8 Å (4) 6.64 x 1018 Å 22. BOHR'S ATOMIC MODEL

Solution