Recent questions tagged easy

A parallel plate capacitor made of circular plates each of radius $R=6.0\;cm$ has a capacitance $c= 100\;pF$. The capacitor is connected to a $230\;v$ a.c supply with an angular frequency of $300\;rad\;S^{-1}$ . What is the r.m.s value of the conduction current ?.Is the conduction current equal to the displacement current ?

asked Aug 16, 2016 by meena.p

1 answer

A parallel plate capacitor made of circular plates each of radius $R=6.0\;cm$ has a capacitance $c= 100\;pF$. The capacitor is connected to a $230\;v$ a.c supply with an angular frequency of $300\;rad\;S^{-1}$ . What is the r.m.s value of the conduction current ?

asked Aug 16, 2016 by meena.p

1 answer

The figure shows a capacitor made of two circular plate each of radius 12 cm and separated and separated by 5.0 mm . The capacitor is being changed by an external source (not shown in the figure ). The changing current is constant and equal to $0.15\;A$ Calculate the capacitor and the rate of change of potential difference between the plates. Is Kischoff's first rule valid at each plate of the capacitor?

asked Aug 16, 2016 by meena.p

1 answer

Complete the reaction : $n+_{92}U^{235} \to _{56} Ba^{144} $+ _____ $ + 3n $

asked Aug 16, 2016 by meena.p

1 answer

The radius of $G_e$ nuclide is measured to be twice the radius of $_4 Be^9$ . The no nucleolus in $Ge$ are

asked Aug 16, 2016 by meena.p

1 answer

Half lives of two ratio active substance A and B are respectively 20 minutes . Initially the samples of A and B have equal number of nuclei. after 80 minutes the ratio of remaining numbers of A and B nuclei is

asked Aug 10, 2016 by meena.p

1 answer

Two H atoms in the ground state collide inelastically . The maximum amount by which their combined kinetic energy is reduced is

asked Aug 10, 2016 by meena.p

1 answer

Taking the Bohr radius as $a_0 = 53\;pm$ the radius of $Li^{++}$ ion in its ground state on the basis of Bohr's model will be about

asked Aug 10, 2016 by meena.p

1 answer

Obtain Approximately the ratio of the nuclear radii of the gold isotope $_{79} Au^{197}$ and silver isotope $_{4}Ag^{107}$

asked Jul 13, 2016 by meena.p

1 answer

Write nuclear reaction equation for Electron capture of $_{54}X_e^{120}$

asked Jul 12, 2016 by meena.p

1 answer

Write the nuclear reaction equation for $\beta^{+}$ decay of $_{43}Tc^{97}$

asked Jul 12, 2016 by meena.p

1 answer

Write the nuclear reaction equation for $\beta^{+}$ decay of $_{6} C ^{11}$

asked Jul 12, 2016 by meena.p

1 answer

Write nuclear equation for $\beta^{-}$ decay of $_{83} Bi ^{210}$ $\beta^{-}$ decay of $_{83} Bi ^{210}$

asked Jul 12, 2016 by meena.p

1 answer

Write nuclear equation for $\beta^{-}$ decay of $_{11} P ^{32}$

asked Jul 12, 2016 by meena.p

1 answer

Write nuclear equation for $\alpha$ decay of $_{94} Pu ^{242}$

asked Jul 12, 2016 by meena.p

1 answer

Write the nuclear reaction for $\alpha$ delay of $_{88} Ra^{226}$

asked Jul 12, 2016 by meena.p

1 answer

A given coin has a mass of 3 o.g calculate the nuclear energy that would be required to separate all the neutrons and protons from each other . For simplicity assume the coin is entirely made of $_{29} Cu ^{63}$ atom (of mass 62.92960u)

asked Jul 12, 2016 by meena.p

1 answer

Obtain the binding energy of the nuclei $_{26} Fe^{56}$ and $_{23} Bi ^{209}$ in units of Mev from the following data $m_H= 1.007825\;amu\;m_n= 1.008665\;amu \; m( _{26} Fe ^{56})=55.934939 \;amu\; m( _{83} Fe ^{209})=208.980388 \;amu\;lamu=931.5\;Mev$ Which nucleus has greater binding energy per nucleon ?

asked Jul 11, 2016 by meena.p

1 answer

Obtain the binding energy of a nitrogen nucleolus $(_7N^{14})$ from the following data $m_n=1.00783 \;amu \; m_n =1.00867$ amn , $m_n=14.00307 \;amu$ give your answer in Mev

asked Jul 11, 2016 by meena.p

1 answer

The three stable isotopes of neon :$Ne^{20}, Ne^{21},Ne^{22}$ have respective abundances of $90 .51 \%, 0.27\%$ and $9.22\%$ . The atomic masses of three isotopes are $19.99$ amu , $20.99\;amu$ and $21.99\;amu$ Obtain the average atomic mass of neon .

asked Jul 11, 2016 by meena.p

1 answer

Boron has two stable isotope, $_5 B^{11}$ and $_5 B^{11}$ Their respective masses are $10.01294 \;amu$ and $11.00931\;amu$ and the atomic weight of Boron in $10.811\;amu$ . Find the abundances of $_5B^{ 10}$ and $_5B^{11}$

asked Jul 11, 2016 by meena.p

1 answer

Two Stable isotopes of lithium $^6_3Li$ and $^7_3 Li$ have respective abundances of $7.5\%$ and $92.5 \%$ These isotopes have messes $6.01512$ amu and $7.01600$ amu respectively . Find the atomic height of lithium

asked Jul 11, 2016 by meena.p

1 answer

A potential difference applied to an - ray tube is $5kv$ and the current through it is $3.2 \;mA$ Then the number of electrons striking the target per second is

asked Jul 8, 2016 by meena.p

1 answer

If an $\alpha$ particle collides head on with a nucleus , What is impact parameter?

asked Jul 8, 2016 by meena.p

1 answer

During x- ray formation if voltage is increased,

asked Jul 8, 2016 by meena.p

1 answer

What would be the radius of second orbit of $He^{+}$ ion ?

asked Jul 8, 2016 by meena.p

1 answer

The size of the atom is proportional to

asked Jul 8, 2016 by meena.p

1 answer

An electron makes a transition from orbit $n=4$ to the orbit n=2 of a hydrogen atom. What is the wave length of the emitted radiation? (R= Rydberg's constant}

asked Jul 8, 2016 by meena.p

1 answer

An electron is moving round the nucleus of a hydrogen atom in a circular orbit of radius r. The coulomb force $\overrightarrow{F}$ between the two is :

asked Jul 8, 2016 by meena.p

1 answer

Hydrogen atoms are excited from ground state to the state of principle quantum number 4, Then the no of spectral lines observed will be

asked Jul 8, 2016 by meena.p

1 answer

Name the spectral series of hydrogen spectrum lying in the infrared region .

asked Jul 8, 2016 by meena.p

1 answer

How much is the radius of Bohr's innermost orbit ?

asked Jul 8, 2016 by meena.p

1 answer

Write an empirical relation for parchen series lies of hydrogen spectrum

asked Jul 8, 2016 by meena.p

1 answer

What is the angle of scattering for zero impact parameter ?

asked Jul 8, 2016 by meena.p

1 answer

Name the series of hydrogen spectrum which has least wave length

asked Jul 8, 2016 by meena.p

1 answer

In which series of hydrogen spectrum , the transition involve the largest changes of energy ?

asked Jul 8, 2016 by meena.p

1 answer

When electron falls from a higher energy to a lower energy level , the difference in the energies appear in the form of electromagnetic radiation . Why cannot it be emitted as other form of energy?

asked Jul 8, 2016 by meena.p

1 answer

The Balmer series for the H- atom can be observed

asked Jul 8, 2016 by meena.p

1 answer

The Bohr model for the Spectra of a H-atom

asked Jul 8, 2016 by meena.p

1 answer

A set of atoms in an excited state decays

asked Jul 7, 2016 by meena.p

1 answer

The Simple Bohr model cannot be directly applied to calculate the energy levels of an atom with many electrons . This is because

asked Jul 7, 2016 by meena.p

1 answer

Taking the Bohr radius as $a_0 = 53 \;pm, $ the radius of $Li^{++}$ ion in its ground state , on the basic of Bohr's model will be about

asked Jul 6, 2016 by meena.p

1 answer

The total energy of electron in the first electron state of hydrogen atom is about $-3.4\;ev$ What is the kinetic energy of electron in this state ?

asked Jul 6, 2016 by meena.p

1 answer

Is the average angle of deflection of $ \alpha$ particles by a thin gold foil predicted by Thomson's model much less , about the same or much greater than that predicted by Rutherford's atom model ?

asked Jul 6, 2016 by meena.p

1 answer

In accordance with the Bohr's model find the quantum number that characterizes the earth revolution around the sun in an earth orbit of radius $1.5 \times 10^{11}\;m$ with orbital speed $3 \times 10^4 \;ms^{-1}$

asked Jul 6, 2016 by meena.p

1 answer

A $12.5\;ev$ electron beam is used to bombard gaseous hydrogen at room temperature .What series of wave length will be emitted ?

asked Jul 6, 2016 by meena.p

1 answer

The radius of inner most electron orbit of a hydrogen atom is $5.3 \times 10^{-11}\;m $ what are the radii of $n=2$ and $n=3$ orbits?

asked Jul 6, 2016 by meena.p

1 answer

Using Bohr's model , calculate the orbital period of the electron in a hydrogen atom in the $n= 1,2$ and $3$ levels

asked Jul 6, 2016 by meena.p

1 answer

Using the Bohr's model , calculate the speed of the electron in a hydrogen atom in the $n= 1,2$ and 3 levels

asked Jul 6, 2016 by meena.p

1 answer

The ground state energy of hydrogen atom is $-13.6 ev$ what are the kinetic and potential energies of the electron of the electron in this state ?

asked Jul 5, 2016 by meena.p

1 answer

Ask Questions, Get Answers