Description : The first Hydrogen spectral series was identified , in 1885, by a) J.R.Rydberg b) J.J.Balmer c) Theodore Lyman d) F. S. Brackett
Last Answer : b) J.J.Balmer
Description : Which series lies in the Ultraviolet region? a) Lyman series b) Paschen series c) Brackett serie d) Balmer series
Last Answer : a) Lyman series
Description : The only series which lies in the visible region of the electromagnetic spectrum is a) Paschen series b) Lyman series c) Balmer series d) Pfund series
Last Answer : b) Lyman series
Description : The first emission line of Balmer series in `He^(+)` - spectrum has the wave no .in `(Cm^(_1))` (R-Rydberg constant)
Last Answer : The first emission line of Balmer series in `He^(+)` - spectrum has the wave no .in `(Cm^(_1))` (R-Rydberg constant ... )` C. `(5R)/(36)` D. `(R)/(6)`
Description : Dimension of Rydberg constant is a) LT-1 b) L-1 c) (LT)-1 d) L-1T
Last Answer : b) L-1
Description : Three spectral series, paschen series, Brackett series, Pfund series are found in the a) ultraviolet region b) visible region c) infrared region d) a & b region
Last Answer : c) infrared region
Description : What hydrohen-like ion has the wave-length difference between the first lines of the Balmer and Lyman series equal to `593 Å`.
Last Answer : What hydrohen-like ion has the wave-length difference between the first lines of the Balmer and Lyman series equal to `593 Å`.
Description : Calculate the wavelengths of the member of Lyman, Balmer and Paschen series.
Last Answer : Calculate the wavelengths of the member of Lyman, Balmer and Paschen series.
Description : Whenever a photon is emitted by hydrogen in balmer series it is followed by another in lyman series what wavelength does this latter photon correspond
Last Answer : Whenever a photon is emitted by hydrogen in balmer series it is followed by another in ... what wavelength does this latter photon correspond to?
Description : What hydrogen-like ion has the wavelength difference between the first lines of the Balmer Lyman series equal to `59.3nm`?
Last Answer : What hydrogen-like ion has the wavelength difference between the first lines of the Balmer Lyman series equal to `59.3nm`?
Description : For the hydrogen atom, which series describes electron transitions to the N = 2 orbit? Is it the: w) Lyman series x) Paschen series y) Balmer series z) Pfund series
Last Answer : ANSWER: Y -- BALMER SERIES
Description : For the hydrogen atom, which series describes electron transitions to the N=1 orbit, the lowest energy electron orbit? Is it the: w) Lyman series x) Balmer series y) Paschen series z) Pfund series
Last Answer : ANSWER: W -- LYMAN SERIES
Description : The region where the Lyman series contains the wavelength 1∕ λ = RH [1/ 12 – 1/ n2 ] is a) visible region b) infrared region c) ultraviolet region d ) none of these
Last Answer : c) ultraviolet region
Description : Three resistors of resistance R are connected in various ways, which of the following cannot be obtained? a. 3R ohm b. 2R/4 ohm c. R/3 ohm d. 2R/3 ohm
Last Answer : b. 2R/4 ohm
Description : Calculate the Rydberg constant `R` if `He^(+)` ions are known to have the wavelength difference between the first (of the longest wavelength) lines of
Last Answer : Calculate the Rydberg constant `R` if `He^(+)` ions are known to have the wavelength difference between ... series equal to `Delta lambda = 133.7nm`.
Description : The force in a medium of relative permitivity ∈r is given by: (a) F′ =F (b) F′ =∈r ∈ F r (c) F′ = ∈r . F (d) F′ =F ∈ ∈
Last Answer : (a) F′ =F
Description : Positron was discovered by a) J. J. Thomson b) Millikan c) Anderson d) Dirac
Last Answer : d) Dirac
Description : The electron was discovered by a) Burcherer b) Anderson c) Chadwick d) J. J Thomson
Last Answer : d) J. J Thomson
Description : 2) To achieve its marketing objectives, Johnson & Johnson has formulated a set of marketing strategies. This set of strategies is J & J's A)corporate strategy. B)marketing programme. C)overall strategy. D)marketing tactic. E)strategic plan.
Last Answer : B)marketing programme.
Description : .In electromagneticwaves,polarization a. is caused by reflection b.isdue to the transversenature ofthewaves c. results from the longitudinal nature of the waves d. is always vertical in an isotropic medium
Last Answer : b.isdue to the transversenature ofthewaves
Description : The continuous X-ray spectrum is obtained due to the effect called a) Braking radiation b) Bremsstrahlung c) both a & b d) none of a & b
Last Answer : b) Bremsstrahlung
Description : Line spectrum is obtained on the screen in the form of lines if the slit in front of the source is a) narrow square b) broad square c) narrow rectangle d) broad rectangle
Last Answer : c) narrow rectangle
Description : A three dimensional image is obtained by a)Electron microscope b) Scanning electron microscope c) Magnetic imaging d)None of these
Last Answer : b) Scanning electron microscope
Description : Cellular totipotency was demonstrated by (a) Theodore Schwann (b) A.V. Leeuwenhoek (c) F.C. Steward (d) Robert Hooke.
Last Answer : (c) F.C. Steward
Description : The most intense line in the Brackett series of the spectrum of atomic hydrogen is the transition :-
Last Answer : The most intense line in the Brackett series of the spectrum of atomic hydrogen is the transition :- A. `n_(2)=ooton_ ... (1)=4` D. `n_(2)=4ton_(1)=3`
Description : The left hand rule correlates to (a) current, induced e.m.f. and direction of force on a conductor (b) magnetic field, electric field and direction of force on a conductor (c) self induction, ... and direction of force on a conductor (d) current, magnetic field and direction of force on a conductor
Last Answer : (d) current, magnetic field and direction of force on a conductor
Description : Stress is defined as: a) F/A b) F/A2 c) A/F d) FxA
Last Answer : a) F/A
Description : Internal resistance is the resistance offered by a. source of e m f b. Conductor c. Resistor d. Capacitor
Last Answer : a. source of e m f
Description : Three equal resistors connected in series with a source of e m f together dissipate 10 W of power each. What will be the power dissipated if the same resistors are connected in parallel across the same source of e m f? a. 40 W b. 90W c. 100W d. 120W
Last Answer : b. 90W
Description : How has the Endrew F case affected the way IEPs are created or formulated for autistic children?
Last Answer : Is this really a question? Seems more like a new article or a persuasive essay. Or maybe a harangue. But not really a question that is answerable.
Description : Sometimes, when you change the running direction of a E/R blower (from supply to exhaust) it trips. Why?
Last Answer : If the flaps of the blower are not set or opened properly or the filters are clogged, the air supply is affected and the blower may be overloaded causing it to trip. Ask E/O for more information.
Description : The total energy of electron in the Bohr orbit is given by the formula, E = a) - ke2 /2r b) - ke2 /2r2 c) - k 2 e/2r d) - ke2 /r
Last Answer : a) - ke2 /2r
Description : The product of uncertainties of two physical observables must be approximately equal to a)Coulomb’s constant K b) Rydberg’s constant R c)Planck’s constant d)All of the above
Last Answer : c)Planck’s constant
Description : A proton moves in a uniform magnetic field in a circular path of radius R. If the energy of proton is doubled then the new radius becomes a) R √2 b) 2R c) R 2 d) √2 R
Last Answer : d) √2 R
Description : A wire of uniform area of cross-section A length L and resistance R is cut into two parts. Resistivity of each part a. remains the same b. is doubled c. is halved d. becomes zero
Last Answer : a. remains the same
Description : Who formulated the zeroth law of thermodynamics in 1931? A. A. Celsuis B. A. Einstein C. R.H. Fowler D. G. Fahrenheit
Last Answer : R.H. Fowler
Description : This 1896 Supreme Court decision approved segregation of blacks as long as "separate but equal" facilities were provided A. Plessy v. Ferguson B. Marbury v. Madison C. Brown v. Board of Education D. Dred Scott v. Stanford?
Last Answer : Plessy v. Ferguson
Description : The line with smallest wavelength in the Balmer series in the hydrogen spectrum will have the frequency :-
Last Answer : The line with smallest wavelength in the Balmer series in the hydrogen spectrum will have the frequency :- A. `8. ... 1)` D. `8.05xx10^(13)s^(-1)`
Description : The energy corresponding to second line of Balmer series for hydrogen atom will be :-
Last Answer : The energy corresponding to second line of Balmer series for hydrogen atom will be :- A. 12.1 eV B. 1.89 eV C. 2.55 eV D. 13.6 eV
Description : Find the binding energy of an electron in the ground state of a hydrogen like atom in whose spectrum the third Balmer line is equal to 108.5 mm.
Last Answer : Find the binding energy of an electron in the ground state of a hydrogen like atom in whose spectrum the third Balmer line is equal to 108.5 mm.
Description : In the presidential campaign of 1896 how did William jennings Bryan represent the populist partys goal of building a broad based movement?
Last Answer : Need answer
Description : How did William Jennings Bryan 1896 presidential campaign support the populist party and goal of building a broad based movement?
Description : What 1896 is divisible to?
Last Answer : All Factors of 1896:1, 2, 3, 4, 6, 8, 12, 24, 79, 158, 237, 316, 474, 632, 948, 1896
Description : What was true about William Jennings in the 1896 presidential election?
Last Answer : He support Ed many populist policies
Description : How did William Jennings Bryan's 1896 presidential campaign support the populist party's goal of building a board-based movement?
Last Answer : Bryan toured the country and spoke directly to the people
Description : How many states where in the union in 1896?
Last Answer : What is the answer ?
Description : “Auditor is a watchdog and not a blood hound” was a remark made in the case of– (A) The London Oil Storage Co. Ltd. 1904 (B) Kingston Cotton Mills Ltd. 1896 (C) London and General Bank 1895 (D) Delightful Cigarette Co. Ltd. 1943
Last Answer : Answer: Kingston Cotton Mills Ltd. 1896