The value of plank's constant is
A. 6.6 × 10-38 Js
B. 6.6 × 10-34 Js
C. 6.7 × 10-39 Js
D. 7.9 × 10-35 Js
Answer: Option B
Related Questions on Modern Physics
. . . . . . . . invented Atom Bomb.
A. J Robert Oppenheimer
B. John Bau a Ning
C. Samuel Cohan
D. Samuel Colt
A. when low speed electrons is ejected
B. when high speed electron is obstructed by a metal surface
C. when anode-ray obstructed by a solid object
D. when γ-ray is obstructed by a solid object

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