Answer: C Bending Moment \(C=\dfrac { Y{ I }_{ G } }{ R } \) where \(Y= 2\times { 10 }^{ 11 }N/{m}^{2}\) \(R= 10cm= 0.1m\) \({ I }_{ G }=\dfrac{\pi{R}^{4}}{4} = \dfrac{\pi{0.1}^{4}}{4} =7.85\times{10}^{-5} m^{4}\) Put these in the expression for \(C\), \(C=1.57N/m\)
(A) \(Ni (II)\) compounds are less stable than \(Pt(II)\) compounds (B) \(Ni (IV)\) compounds are more stable that \(Pt(IV)\) compounds (C) \(Ni (IV)\) compounds are less stable than \(Pt(IV)\) compounds (D) \(Ni (IV)\) compounds are more stable than \(Pt(II)\) compounds
A neutron, with kinetic energy KE and moving with velocity \(v\), collides head on with a nucleus of mass number \(A\) perfectly elastically. The fraction of total energy possessed by the neutron transferred to nucleus is (A) \(\dfrac{4A}{(A+1)^2}\) (B) \(\left(\dfrac{A-1}{A+1}\right)^2\) (C) \(\left(\dfrac{A+1}{2A}\right)^2\) (D) \(\left(\dfrac{A-1}{2A}\right)^2\)
Which is true about Rochelle's salt and lead zirconate? (A) Rochelle's salt is ferroelectric while lead zirconate is anti-ferroelectric (B) Rochelle's salt is anti-ferroelectric and lead zirconate is ferroelectric (C) Both are ferroelectric (D) Both are anti- ferroelectric
The wave function (in SI units) for an electromagnetic wave is given as \(\psi (x,t)={ 10 }^{ 3 }\sin p{ \left( 3\times { 10 }^{ 6 }x-9\times { 10 }^{ 14 }t \right) } \).The speed of the wave is: