Related Questions

The entire range of the electromagnetic spectrum spans a large spectrum of wave lengths varying from:
A 10-10 to 106 m
B 10-8 to 106 m
C 10-10 to 1010 m
D 10-8 to 108 m
হাইড্রোজেন বর্ণালীর কোন সিরিজটি UV অঞ্চলে পড়ে? (Which one of the following series of hydrogen spectrum falls in the UV region?)
A লাইমেন (Lyman)
B বামার (Balmer)
C প্যাশ্চেন (Paschen)
D ব্র্যাকেট (Brackett)
The oxygen atom is ________ times heavier than the hydrogen atom.
A 2
B 8
C 16
D 32
RH রিডবার্গ ধ্রুবক হলে, হাইড্রোজেন বর্ণালির বামার সিরিজের ২য় লাইনের তরঙ্গদৈর্ঘ্য কত হবে? ( If RH is the Rydberg constant, what will be the wavelength of the 2nd line in the Balmer series of hydrogen spectrum?)
A 36RH5
B 163RH
C 3RH16
D 536RH
তড়িৎচুম্বকীয় বর্ণালিতে (electromagnetic spectrum) নিচের কোনটির তরঙ্গদৈর্ঘ্য সবচেয়ে বেশি?
A UV-ray
B X-ray
C TV-waves
D Infrared ray
Electromagnetic spectrum contains:
A Gamma rays (wave length -10 m)
B Ultraviolet rays (wave length -6 m)
C Infrared rays (wave length -4 m)
D All of these
The range of electromagnetic spectrum important in heat transfer by radiation is __________ microns.
A 0.38-0.78
B 0.5-50
C 100-1000
D 5-50
To tell a lie is great sin. We_die than tell a lie.
A have hetter
B would rather
C should
D have to
Why does'nt the hydrogen atom emit X-rays?
A It is very small in size
B It has only one electron
C Its energy levels are very close to each other
D it is highly electropositive
As an atom absorbs energy, ........ increases and the atom is said to be excited.
A as its energy level
B it is energy level
C the energy level of it
D the energy level

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