Home
Class 12
PHYSICS
Suppose you are given a chance to repeat...

Suppose you are given a chance to repeat the alpha- particle scattering experiment using a thin sheet of solid hydrogen in place of the gold foil. (Hydrogen is a solid at temperatures below 14 K.) What results do you expect?

Text Solution

Verified by Experts

The nucleus of a hydrogen atom is a proton. The mass of it is `1.67 xx 10^(–27) kg`, whereas the mass of an incident a-particle is `6.64 xx 10^(–27) kg`. Because the scattering particle is more massive than the target nuclei (proton), the `alpha`-particle won’t bounce back in even in a head-on collision. It is similar to a football colliding with a tenis ball at rest. Thus, there would be no large-angle scattering.
Promotional Banner

Topper's Solved these Questions

  • ATOMS

    NCERT GUJARATI|Exercise ADDITIONAL EXERCISE|10 Videos

  • ATOMS

    NCERT GUJARATI|Exercise ADDITIONAL EXERCISE|10 Videos

  • ALTERNATING CURRENT

    NCERT GUJARATI|Exercise ADDITIONAL EXERCISES|19 Videos

  • CURRENT ELECTRICITY

    NCERT GUJARATI|Exercise ADDITIONAL EXERCISES|9 Videos

Similar Questions

Explore conceptually related problems

The Sun is a hot plasma (ionized matter) with its inner core at a temperature exceeding 10^(7)Kg , and its outer surface at a temperature of about 6000K. At these high temperatures , no substance remains in a solid or liquid phase. In what range do you expect the mass density of the Sun to be, in the range of densities of solids and liquids or gases ? Check if your guess is correct from the following data: mass of the Sun =2.0xx10^(30)Kg , radius of the Sun =7.0xx10^(8)m .

Two ideal gas thermometers A and B use oxygen and hydrogen respectively. The following observations are made : What do you think is the reason behind the slight difference in answers of thermometers A and B ? (The thermometers are not faulty). What further procedure is needed in the experiment to reduce the discrepancy between the two readings ?

Answer the following questions based on the P - T phase diagram of CO_(2) : (a) CO_(2) at 1 atm pressure and temperature -60^(@)C is compressed isothermally. Does it go through a liquid phase ? (b) What happens when CO_(2) at 4 atm pressure is cooled from room temperature at constant pressure ? (c) Describe qualitatively the changes in a given mass of solid CO_(2) at 10 atm pressure and temperature -65^(@)C as it is heated up to room temperature at constant pressure. (d) CO_(2) is heated to a temperature 70^(@)C and compressed isothermally. What changes in its properties do you expect to observe ?

In Rutherford experiment generally the thin foil of heavy atoms like gold platinum etc have been used to be bombarded by the alpha- particles If the thin foil of light atoms like aluminium etc is used what difference would be observed from the above results

Two ideal gas thermometers A and B use oxygen and hydrogen respectively. The following observations are made: {:("Temperature","Pressure","Pressure"),(,"thermometer A","thermometer B"),("Triple - point water",1.250 xx10^(5) Pa,0.200 xx 10^(5) Pa),("Normal melting point of sulphur",1.797 xx10^(5)Pa,0.287 xx10^(5)Pa):} (a) What is the absolute temperature of normal melting point of sulphur as read by thermometers A and B ? (b) What do you think is the reason behind the slight difference in answers of thermometers A and B ? (The thermometers are not faulty). What further procedure is needed in the experiment to reduce the discrepancy between the two readings ?

Scientists are working hard to develop nuclear fusion reactor Nuclei of heavy hydrogen, _(1)^(2)H , known as deuteron and denoted by D , can be thought of as a candidate for fusion rector . The D-D reaction is _(1)^(2) H + _(1)^(2) H rarr _(2)^(1) He + n+ energy. In the core of fusion reactor, a gas of heavy hydrogen of _(1)^(2) H is fully ionized into deuteron nuclei and electrons. This collection of _1^2H nuclei and electrons is known as plasma . The nuclei move randomly in the reactor core and occasionally come close enough for nuclear fusion to take place. Usually , the temperature in the reactor core are too high and no material will can be used to confine the to plasma for a time t_(0) before the particles fly away from the core. If n is the density (number volume ) of deuterons , the product nt_(0) is called Lawson number. In one of the criteria , a reactor is termed successful if Lawson number is greater then 5 xx 10^(14) s//cm^(2) it may be helpfull to use the following boltzmann constant lambda = 8.6 xx 10^(-5)eV//k, (e^(2))/(4 pi s_(0)) = 1.44 xx 10^(-9) eVm In the core of nucleus fusion reactor , the gas become plasma because of

Scientists are working hard to develop nuclear fusion reactor Nuclei of heavy hydrogen, _(1)^(2)H , known as deuteron and denoted by D , can be thought of as a candidate for fusion rector . The D-D reaction is _(1)^(2) H + _(1)^(2) H rarr _(2)^(1) He + n+ energy. In the core of fusion reactor, a gas of heavy hydrogen of _(1)^(2) H is fully ionized into deuteron nuclei and electrons. This collection of _1^2H nuclei and electrons is known as plasma . The nuclei move randomly in the reactor core and occasionally come close enough for nuclear fusion to take place. Usually , the temperature in the reactor core are too high and no material will can be used to confine the to plasma for a time t_(0) before the particles fly away from the core. If n is the density (number volume ) of deuterons , the product nt_(0) is called Lawson number. In one of the criteria , a reactor is termed successful if Lawson number is greater then 5 xx 10^(14) s//cm^(2) it may be helpfull to use the following boltzmann constant lambda = 8.6 xx 10^(-5)eV//k, (e^(2))/(4 pi s_(0)) = 1.44 xx 10^(-9) eVm Assume that two deuteron nuclei in the core of fusion reactor at temperature energy T are moving toward each other, each with kinectic energy 1.5 kT , when the seperation between them is large enough to neglect coulomb potential energy . Also neglate any interaction from other particle in the core . The minimum temperature T required for them to reach a separation of 4 xx 10^(-15) m is in the range