B
Energy levels A,B,C of a certain atom corresponding to increasing values of energy i.e., EA<EB<EC. If λ1,λ2,λ3 are the wavelengths of radiations correspnding to the transitions C to B,B to A and C to A respectively, which of the following statements is correct?
14
Sep
Energy levels A,B,C of a certain atom corresponding to increasing values of energy i.e., EA<EB<EC. If λ1,λ2,λ3 are the wavelengths of radiations correspnding to the transitions C to B,B to A and C to A respectively, which of the following statements is correct? B B to A and C to A respectively C of a [...]
The energy levels of the hydrogen spectrum is shown in the figure. There are some transitions A, B, C, D and E. Transition A, B, and C respectively represent
14
Sep
The energy levels of the hydrogen spectrum is shown in the figure. There are some transitions A, B, C, D and E. Transition A, B, and C respectively represent and C respectively represent B C D and E. Transition A The energy levels of the hydrogen spectrum is shown in the figure. There are some [...]
Five elements A,B,C,D and E have work functions 1.2eV, 2.4eV ,3.6eV, 4.8eV and 6eV respectively . If light of wavelength 4000Å is allowed to fall on these elements , then photo electrons are emitted by
13
Sep
Five elements A,B,C,D and E have work functions 1.2eV, 2.4eV ,3.6eV, 4.8eV and 6eV respectively . If light of wavelength 4000Å is allowed to fall on these elements , then photo electrons are emitted by 2.4eV 3.6eV 4.8eV and 6eV respectively . If light of wavelength 4000Å is allowed to fall on these elements B [...]
The curves (a),(b),(c) and (d) show the variation between the applied potential difference (V) and the photoelectric current (i) , at two different intensities of light (I1 > I2) . In which figure is the correct variation shown ?
13
Sep
The curves (a),(b),(c) and (d) show the variation between the applied potential difference (V) and the photoelectric current (i) , at two different intensities of light (I1 > I2) . In which figure is the correct variation shown ? (c) and (d) show the variation between the applied potential difference (V) and the photoelectric current [...]
Fig, here shows P and Q as two equally intense coherent sources emitting radiations of wavelength 20m. The separation PQ si 5m, and phase of P is ahead of the phase Q by 90∘. A, B and C are three distant points of observation equidistant from the mid – point of PQ. The intensity of radiations of A, B, C will be in the ratio
12
Sep
Fig, here shows P and Q as two equally intense coherent sources emitting radiations of wavelength 20m. The separation PQ si 5m, and phase of P is ahead of the phase Q by 90∘. A, B and C are three distant points of observation equidistant from the mid – point of PQ. The intensity of [...]
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and phase of P is ahead of the phase Q by 90∘. A ,
B ,
B and C are three distant points of observation equidistant from the mid - point of PQ. The intensity of radiations of A ,
C will be in the ratio ,
Fig ,
here shows P and Q as two equally intense coherent sources emitting radiations of wavelength 20m. The separation PQ si 5m ,
Four identical monochromatic sources A, B, C, D as shown in the (figure) produce waves of the same wavelength lemda and are coherent. Two receiver R1 and R2 are at great but equal distances from B.
10
Sep
Four identical monochromatic sources A, B, C, D as shown in the (figure) produce waves of the same wavelength lemda and are coherent. Two receiver R1 and R2 are at great but equal distances from B. B C D as shown in the (figure) produce waves of the same wavelength lemda and are coherent. Two [...]
The position of a particle moving on x-axis is given by x=At3+Bt2+Ct+D. The numerical value of A,B,C,D are 1,4,-2 and 5 respectively and S.I. units are used. Find velocity of the particle at t=4 sec.
09
Sep
The position of a particle moving on x-axis is given by x=At3+Bt2+Ct+D. The numerical value of A,B,C,D are 1,4,-2 and 5 respectively and S.I. units are used. Find velocity of the particle at t=4 sec. -2 and 5 respectively and S.I. units are used. Find velocity of the particle at t=4 sec. 4 B C [...]
A non-conducting disc of radius a and uniform positive surface charge density σ is placed on the ground, with its axis vertical. A particle of mass m and positive charge q is dropped, along the axis of the disc, from a height H with zero initial velocity. The particle has q/m=4∈0g/σ (a) Find the value of H if the particle just reaches the disc. (b) Sketch the potential energy of the particle as a function of its height and find its equilibrium position.
01
Sep
A non-conducting disc of radius a and uniform positive surface charge density σ is placed on the ground, with its axis vertical. A particle of mass m and positive charge q is dropped, along the axis of the disc, from a height H with zero initial velocity. The particle has q/m=4∈0g/σ (a) Find the value [...]
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a charge q is imparted to the inner shells. Now ,
A non-conducting disc of radius a and uniform positive surface charge density σ is placed on the ground ,
along the axis of the disc ,
B ,
C ,
find the potential difference between the shells. Note that finally key K2 remains closed. ,
Four charge the particles each having charge Q are fixed at the comers of the base (at A ,
key K1 is closed and opened and then key K2 is closed and opened. After the keys K1andK2 are alterbately closed n times each ,
Two concentric shells of radii R and 2R are shown in (Fig. 3.115). Initially ,
with its axis vertical. A particle of mass m and positive charge q is dropped ,
A conducting sphere of radius R having charge Q is placed in a uniform external field E. O is the centre of the sphere and A is a point on the sphere of the sphere such that AO makes an angle of θ0=60∘ with the opposite direction fo external field. calculate the potential at point A due to charge on the sphere only.
01
Sep
A conducting sphere of radius R having charge Q is placed in a uniform external field E. O is the centre of the sphere and A is a point on the sphere of the sphere such that AO makes an angle of θ0=60∘ with the opposite direction fo external field. calculate the potential at point [...]
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a charge q is imparted to the inner shells. Now ,
B ,
C ,
find the potential difference between the shells. Note that finally key K2 remains closed. ,
Four charge the particles each having charge Q are fixed at the comers of the base (at A ,
key K1 is closed and opened and then key K2 is closed and opened. After the keys K1andK2 are alterbately closed n times each ,
Two concentric shells of radii R and 2R are shown in (Fig. 3.115). Initially ,
Four charge the particles each having charge Q are fixed at the comers of the base (at A, B, C, and D) of .a square pyramid with slant length a (AP = BP = DP = PC= a). A charge -Q is fixed at point P. A dipole with dipole moment P is placed at’the center of base and perpendicular to its plane as shown in Fig. 3.122. Find a). the force on dipole due to charge particles, and b). the potential energy of the system.
01
Sep
Four charge the particles each having charge Q are fixed at the comers of the base (at A, B, C, and D) of .a square pyramid with slant length a (AP = BP = DP = PC= a). A charge -Q is fixed at point P. A dipole with dipole moment P is placed at’the [...]
Tags:
a charge q is imparted to the inner shells. Now ,
B ,
C ,
find the potential difference between the shells. Note that finally key K2 remains closed. ,
Four charge the particles each having charge Q are fixed at the comers of the base (at A ,
key K1 is closed and opened and then key K2 is closed and opened. After the keys K1andK2 are alterbately closed n times each ,
Two concentric shells of radii R and 2R are shown in (Fig. 3.115). Initially ,