Question

49. Water on electrolysis with certain amount of current generates l.b g of molecular
hydrogen. The amount of molecular oxygen generated with the same amount of
current will be close to
(A) 8g
(B) 12 s
(c) 49
(D) 24 s​

Answer 1

The uncertainity of a moving bullet of mass 10g is 10^-5 m. Calculate the uncertainity in its velocity?

According to uncertainty principle

Δx.Δmv = ℎ / 4π

Δv = ℎ 4πmΔ

x=6.626 × 10−34 / 4×3

=> ×14×10−2×10−5

=> 5.27×10−28 m/s ...