Home
Class 12
PHYSICS
Choose the correct alternative from the ...

Choose the correct alternative from the clues given at the end of the each statement:
In the ground state of .......... electrons are in stable equilibrium, while in .......... electrons always experience a net force. (Thomson’s model/ Rutherford’s model.)

Text Solution

Verified by Experts

Thomson’s model, Rutherford’s model
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

Choose the correct alternative from the clues given at the end of the each statement: An atom has a nearly continuous mass distribution in a .......... but has a highly non-uniform mass distribution in .......... (Thomson’s model/ Rutherford’s model.)

Choose the correct alternative from the clues given at the end of the each statement: A classical atom based on .......... is doomed to collapse. (Thomson’s model/ Rutherford’s model.)

Choose the correct alternative from the clues given at the end of the each statement: Thepositively charged part of the atom possesses most of the mass in .......... (Rutherford’s model/both the models.)

In..... model electron is in steady equilibrium in ground state where as in ...... model electron experience net force.

Choose the correct alternative from the clues given at the end of the each statement: The size of the atom in Thomson’s model is .......... the atomic size in Rutherford’s model. (much greater than/no different from/much less than.)

As per Bohr model, the minimum energy (in eV) required to remove an electron from the ground state of double ionized Li atom (Z = 3) is

Figure shows a metal rod PQ resting on the smooth rails AB and positioned between the poles of a permanent magnet. The rails, the rod, and the magnetic field are in three mutual perpendicular directions. A galvanometer G connects the rails through a switch K. Length of the rod =15 cm, B =0.50 T, resistance of the closed loop containing the rod 9.0 m Omega . Assume the field to be uniform. (a) Suppose K is open and the rod is moved with a speed of 12 "cm s"^(-1) in the direction shown. Give the polarity and magnitude of the induced emf. (b) Is there an excess charge built up at the ends of the rods when K is open ? What if K is closed ? (c) With K open and the rod moving uniformly, there is no net force on the electrons in the rod PQ even though they do experience magnetic force due to the motion of the rod. Explain. (d) What is the retarding force on the rod when K is closed ? How much power is required (by an external agent) to keep the rod moving at the same speed (= 12 cm s^(-1) ) when K is closed ? How much power is required when K is open? (f)How much power is dissipated as heat in the closed circuit ? What is the source of this power ? (g) What is the induced emf in the moving rod if the magnetic field is parallel to the rails instead of being perpendicular ?

A long straight wire of negligible resistance is bent into V shape, its two arms making an angle alpha with each other and placed horizotally in a vertical, homogeneous field B. A rod of total mass m, and resistance r per unit length, is placed on V shaped conductor, at a distance x_(0) from its vertex A, and perpendicular to the bisector of angle alpha (see fegure) The rod is started off with an initial veloctiy v_(0) in the direction of bisector and away from vertex A. The rod is long enough not to fall off the wire during the subsquent motion, and the electrical contact between the two is good although friction between them is negligible. Choose CORRECT statements(s)

The question has statement - 1 and statement - 2 Of the four choices given after the statements , choose the one that best describes the two statements statement - 1 : Sky wave signals are used for long distance radio communication . These signals are in generel , less stable then ground wave signals statement - 2 : The state of inosphere varies from to hour day and season to season .