Time Left - 12:00 mins

Test on Atoms

Attempt now to get your rank among 445 students!

Question 1

The wavelengths involved in the spectrum of deuterium

are slightly different from that of hydrogen spectrum, because

Question 2

In a hydrogen like atom electron makes transition from an energy level with quantum number n to another with quantum number
(n – 1). If n >> 1, the frequency of radiation emitted is proportional to

Question 3

The transition from the state n = 4 to n = 3 in a hydrogen like atom results in ultraviolet radiation. Infrared radiation will be obtained in the transition from

Question 4

The intensity of gamma radiation from a given source is I. On passing through 36 mm of lead, it is reduced to 1/8. The thickness of lead which will reduce the intensity to half of the initial value is

Question 5

The half-life of a radioactive substance is 20 minutes. The approximate time interval (t₂ – t₁) between the time t₂ when 2/3 of it has decayed and t₁ when 1/3 of it had decayed is

445 attempts
3 upvotes
14 comments

Tags :

Mar 28JEE & BITSAT