A sample of hydrogen (in the form of atoms), is made to absorb white light. `52%` of the hydrogen atoms got ionised. In order to calculate the ionisation energy of hydrogen from its absorption spectrum `("assuming the electrons that got ejected have" KE=0)`, it is possible by measuring the frequency of the:A. line of shortest wavelengthB. line of longest wavelengthC. line of greatest intensityD. line of smallest intensity

A sample of hydrogen (in the form of atoms), is made to absorb white l

1.	A sample of hydrogen (in the form of atoms), is made to absorb white light. `52%` of the hydrogen atoms got ionised. In order to calculate the ionisation energy of hydrogen from its absorption spectrum `("assuming the electrons that got ejected have" KE=0)`, it is possible by measuring the frequency of the:A. line of shortest wavelengthB. line of longest wavelengthC. line of greatest intensityD. line of smallest intensity
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During the transformation of `._(c )X^(a)` to `._(d)Y^(b)` the number of `beta`-particles emitted are a. `d + ((a - b)/(2)) - c` b. `(a - b)/(c )` c. `d + ((a - b)/(2)) + c` d. `2c - d + a = b`A. a. `d + ((a - b)/(2)) - c`B. b. `(a - b)/(c )`C. c. `d + ((a - b)/(2)) + c`D. d. `2c - d + a = b`
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How many `alpha`-particles are emitted in the nuclear transformation: `._(84)Po^(215) rarr ._(82)Pb^(211) + ? ._(2)He^(4)`
Which one of the following nuclear transformation is `(np)` type? a. `._(3)Li^(7) + ._(1)H^(1) rarr ._(4)Be^(7) + ._(0)n^(1)` b. `._(33)As^(75) + ._(5)He^(4) rarr ._(35)Bi^(78) + ._(0)n^(1)` c. `._(83)Bi^(209) + ._(1)H^(2) rarr ._(84)Po^(210) + ._(0)n^(1)` d. `._(21)Sc^(45) + ._(0)n^(1) rarr ._(20)Ca^(45) + ._(1)H^(1)`A. a. `._(3)Li^(7) + ._(1)H^(1) rarr ._(4)Be^(7) + ._(0)n^(1)`B. b. `._(33)As^(75) + ._(5)He^(4) rarr ._(35)Bi^(78) + ._(0)n^(1)`C. c. `._(83)Bi^(209) + ._(1)H^(2) rarr ._(84)Po^(210) + ._(0)n^(1)`D. d. `._(21)Sc^(45) + ._(0)n^(1) rarr ._(20)Ca^(45) + ._(1)H^(1)`
After np orbitals are filled, the next orbital filled will be :-(a). `(n+1)s`(b). `(n+2)p`(c). `(n+1)d`(d). `(n+2)s`A. `(n+1) s`B. `(n+2)p`C. `(n+1) d`D. `(n+2) s`
The total number of `alpha`- and `beta`-particles given out during nuclear given nuclear transformation is:A. `2`B. `4`C. `6`D. `8`
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The equipment used to carry out nuclear reaction in a controlled manner is calledA. Breeder reactorB. Nuclear reactorC. Thermonuclear fissionD. Cyclotron
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