apurba

49.What is the output of an AND gate when both the inputs are 0?

[A] 0
[B] 1
[C] Either 0 or 1
[D] 2

46.What is the value of Rydberg constant?

[A] 1.0973 x 103 m-1
[B] 1.0973 x 105 m-1
[C] 1.0973 x 107 m-1
[D] 1.0973 x 109 m-1

44.Which of the following element has an isotope named as Tritium?

[A] Helium
[B] Carbon
[C] Titanium
[D] Hydrogen