Engineering Entrance Exam

Yea. You can easily get the ECE with your rank in the upcoming round. As a rank with 6056 is already very close and the Amrita CBE have always a slight range distance for ECE every year.

The admission to BTech and BTech courses has been started through JEE Main. Additionally, the institute has released the Round 1 seat allotment result wherein B.Tech. in Computer Science and Engineering (Internet of Things, Cyber Security including Block Chain Technology) closing rank stood at 47166

Recently, NIELIT Patna cutoff 2025 for the Round 1 seat allotment has been released by the institute for the admission to BTech and BTech Integrated courses. As per the JEE Main 2025 cut off data, the B.Tech. in Computer Science and Engineering rank stood at 50162 for the General AI category candida

Explanation- velocity of a freely falling body is v= $\sqrt[]{2gh}$

And $?=\frac{h}{mv}=\frac{h}{m\sqrt[]{2gh}}$

$?=h$ ^-1

Explanation-number of photon emitted per second n= $\frac{p}{\frac{hc}{?}}=\frac{p?}{hc}=\frac{20\times 5000\times {10}^{-10}}{6.62\times {10}^{-34}\times 3\times {10}^8}$

$=5\times {10}^{19}{s}^{-1}$

(ii) E=hc $/?$ = $\frac{6.62\times {10}^{-34}\times 3\times {10}^8}{5000\times {10}^{-10}\times 1.6\times {10}^{-19}}=2.48eV$  this enegy is greater than 2 so emission is possible

(iii) work function $?$ = $\frac{p}{4?d^2}\times ?r^2?t$ = ${?}_o$

$?t$ = $\frac{4?d^2}{p{r}^2}$ = $\frac{4\times 2\times 16\times 1.6\times {10}^{-19}\times 2^2}{20\times {(1.5\times {10}^{-10})}^{-2}}=28.4s$

(iv) N= $\frac{n?r^2}{4?d^2}\times ?t$

 = $\frac{5\times {10}^{19}\times {(1.5\times {10}^{-10})}^2\times 28.4}{4\times ({2)}^2}$ =2

(v) as the time of emission is 11.04s so

Explanation- according to law of conservation of momentum

S0 m_Av+m_b0=m_Av₁+m_Bv₂

So m_A(v-v₁)= m_Bv₂

according to law of conservation of kinetic energy

1/2m_Av²=1/2m_Av₁²+1/2m_Bv₂²

So m_A(v²-v₁²)= m_Bv₂²

From above eqn we can say that v+v₁=v₂ or v=v₂-v₁

So v₁= $\frac{m_A{-m}_B}{m_A{+m}_B}$ v  and v₂= $\frac{2m_A}{m_A{+m}_B}$ v

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