Last seen: Jan 13, 2022
L = 10 ve = ∞ ue = fe = 5 v0 = 10 - 5 = 5 1/v0 - 1/u0 = 1/f0 1/5 - 1/u0 = 1/1 u0 = - 5/4 cm 5/4 = n/40 n = 50
2d sinθ = nλ 2d√3/2 = (1)λ d = 1A λ = √3 Å √3 = √150/v V = 50 volt E = 50 eV
(1) 2200 Hz Explanation: λ/2 = 24.5 - 17 = 7.5 cm f = V/λ = 330 x 100/15 = 2200 Hz
(3) 4.0 × 1018 Explanation: N = PV/KT U = 3/2 KT ∴ N = 3PV/2U = 3.99 x 1018
(3) 14.5% Explanation: Δt/t = 2Δa/a + 2/3 Δb/b + 1/2 Δc/c + 3 Δd/d = 2 x 2 + 2/3 x 1.5 + 1/2 x 4 + 3 x 2.5 = 4 + 1 + 2 + 7.5 = 14.5%
(1) 3/4 Explanation: Iω + 0 = Iωc + 3Iωc ωc = ω/4 Loss of kinetic energy = 1/2Iω2 - 1/2(I + 3I)(ω/4)2 = 1/2Iω2 - 1/2Iω2/4 = 3/8Iω2 Fract...
(3) 5/9 Explanation: Given that gn = gd GM/(R + h)2 = GM/R3(R - d) GM/(R + R/2)2 = GM/R3(R - d) 4GM/9R2 = GM/R2(1 - d/R) 4/9 = 1 - d/R ...
(3) 96% Explanation: i = P/V = 1000/220 PR = (i2)R η = 1000 x 100/1000 + 41.32 = 96%
(1) R1 + G Explanation: ig(R1 + g) = 1 ig(R1 + G + R2) = 2 1/R1 + G(R1 + G + R2) = 2 R1 + G + R2 = 2R1 + 2G R2 = R1 + G
(3) 87.5ºC Explanation: As per given condition 1/2 x 1/2 mv2 = (msΔT) Δt = V2/4s = 210 x 210/4 x 4.2 x 0.3 x 1000 = 87.5ºC
(i) 2Fe2+ + H2O2 → 2Fe3+ + 2OH- (ii) 2MnO4- + 6H+ + 5H2O2 → Mn2++ 5O2 + 8H2O So sum of (x + y + x1 + y1 + z1) = 2 + 2 + 2 + 5 + 8 = 19
Threonine have two chiral carbon atom. 2s.png
Equivalent of solute = 0.1 × 0.1 Mole of solute (Na2CO3.xH2O) = [0.1 × 0.1]1/2 Mass of Na2CO3.xH2O = [0.1 × 0.1] 1/2 x [106 + 18x] = 1.43 =>...
∏ = iCRT = i [n/V]RT ∏final = (π1V1)+ (π2V2)/V1 + V2 ∏final = (0.1 x 1) + (0.2 x 2)/3 = (0.1 + 0.4)/3 = 0.5/3 = 500/3 x 10-3 atm so X = 167
k = Ae- Ea/RT In(K2/K1) = Ea/R[1/T1 - 1/T2] In(5) = Ea/8.314[1/300 - 1/315] 1.6094 = Ea/8.314[15/300 x 315] Ea = 84297 J
(1) – 0.4 Δ0 Explanation: [CoF3(H2O)3] Co3+ = 3d64s0 => t2g2,1,1 , eg1,1 CFSE = [-0.4n t2g+ 0.6neg]Δ0 + n(P) = [-0.4 x 4 + 0.6 x 2]Δ0 + 0 ...
(4) Egg white Explanation: Blue ink is a colloidal sol, so it can be stabilised by material like natural gum or Egg white/albumen.
(2) Zero Explanation: W = –Pext ΔV In expansion against vacuum Pext = 0 So work done is zero
(3) Global warming and acid rain Explanation: In Calcination and roasting CO2 and SO2 are released which are responsible for Global warning and ac...
(4) Inhibits the action of histamine receptor Explanation: Seldane act as antihistamines and interfere with the natural action of histamine by com...