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A hydrogen atom moving at speed `v` collides with another hydrogen atom kept at rest .Find the minimum value of `v` for which one of the atoms may get

Monjur Alahi

A hydrogen atom moving at speed `v` collides with another hydrogen atom kept at rest .Find the minimum value of `v` for which one of the atoms may get ionized, the mass of a hydrogen atom `= 1.67 xx 10^(-27)kg`


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Salim Ahmed Kawsar

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Correct Answer - `[7.2 xx 10^(4)m//s]`

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The car delivered the cargo from point A to point B, moving at average speed `mu_(1)=40km//h`. Turning back, the car was moving at an average speed of

Correct Answer - D `t_(1)=(x)/(40),t_(2)=(x)/(60)` `v_(av)=(2x)/(t_(1)+t_(2))=(2x)/((x)/(40)+(x)/(60))=(2xx60xx40)/(100)=48km//hr`

2 Answers 1 views
A light photon of wavelength `lambda_(0)` is absorbed by an atom of mass m at rest in ground state. The atom is free to move. The atom after absorbing

Correct Answer - `lambda_(0) = (2h)/(sqrt(2mk) + (k)/(c))`

2 Answers 7 views
A free hydrogen atom in its ground state is at rest. A neutron having kinetic energy `k_(0)` collides head one with the atom. Assume that mass of both

Correct Answer - (a) `20.4 eV` , (b) `8.72 eV` or `4.19 eV`

2 Answers 1 views
A hydrogen atom in ground state is moving with a kinetic energy of 30 eV. It collides with a deuterium atom in ground state at rest. The hydrogen atom

Correct Answer - `20 eV, 13.2 eV`

2 Answers 1 views
A diatomic molecule moving at a speed u absorbs a photon of wavelenght `lambda` and then dissociates into two identical atoms. One of the atoms is fou

Correct Answer - `BE=(hc)/(lambda)-(1)/(2)Mu^(2)-(1)/(2)Mv^(2)`

2 Answers 1 views
The minimum kinetic energy of a ground state hydrogen atom required to have head-on collision with another ground state hydrogen atom but at rest to p

Correct Answer - 20.4 eV

2 Answers 2 views
A mass 2m moving with some speed is directly approaching another mass m moving with double speed.

Correct answer is (B) 3/2

2 Answers 25 views
A man travels two-third part of his total distance with speed `v_(1)` and rest one-third part with speed `v_(2)`. Find out the average speed of the ma

Correct Answer - `(3v_(1)v_(2))/(v_(2)+2v_(1))

2 Answers 1 views
A car starts from rest and moves with uniform acceleration for time t then it moves with uniform speed of 60 km/h for time 3t and comes to rest. Find

Correct Answer - 50 km/h

2 Answers 2 views
A 10 kg mass moving at 5 m/s collides head on with a 4 kg mass moving at 2 m/s in the same direction. If e = 1/2, find their velocity after impact.

Given: m1 = 10 kg, m2 = 4 kg u1 = 5 m/s, u2 = 2 m/s, e = \(\frac{1}{2}\) To find: Velocity after impact (v1 and v2) Formulae: i. m1u1 + m2u2 = m1v1 + m2v2 ii. e = \((\frac{v_2-v_1}{u_1-u_2})\) Calculation: From formula (i), 10 × 5...

2 Answers 1 views

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