MEDIUM
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What is the primary purpose of thematic maps?

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Important Questions on Relations and Functions

MEDIUM
The electron in a hydrogen atom passes from n=4 energy level to n=1 energy level. What is the maximum number of photons that can be emitted?
EASY
The ratio of wavelengths of the last line of the Balmer series and the last line of the Lyman series is_____.
HARD
Explain the different types of spectral series.
EASY
Name the electromagnetic radiations used for (a) water purification, and (b) eye surgery.
EASY
List any two applications of DNA fingerprinting technique.
MEDIUM
The waves used by artificial satellites for communication purposes are
EASY
An electron from various excited states of hydrogen atom emit radiation to come to the ground state. Let λn, λg be the de Broglie wavelength of the electron in the nth state and the ground state respectively. Let n be the wavelength of the emitted photon in the transition from the nth state to the ground state. For large n, (A, B are constants)
EASY
Identify the part of the electromagnetic spectrum used in i radar and ii eye surgery. Write their frequency range.
EASY
Expand VNTR and describe its role in DNA fingerprinting.
EASY
Given the value of Rydberg constant is 107 m-1, the wave number of the last line of the Balmer series in hydrogen spectrum will be:
MEDIUM
Which mode of propagation is used by short wave broadcast services ?
EASY
Name the electromagnetic radiations used for eye surgery.
MEDIUM
Explain the mechanism of translation that occurs in the ribosomes in a prokaryote.
EASY
Why are infra-red waves often called heat waves ? Explain.
EASY
In Balmer series for hydrogen atom, find the energy of photon corresponding to longest wavelength.
EASY
Which of the following is not required for any of the techniques of DNA fingerprinting available at present?
EASY
For x ϵ (0,32), let fx=x,gx=tanx and hx=1-x21+x2 . If ϕx=(hof)og)(x), then ϕ π3 is equal to:
EASY
Find gof and fog when f:RR and g:RR is defined by f(x)=x2+2x+3 and g(x)=3x4.