Q.1
Who found out about dual behavior of a matter?
  • a) De Broglie
  • b) Bohr
  • c) Rutherford
  • d) Thomson
Q.2
A ball of mass 0.5kg is moving with velocity 6.m/s. What’s the wavelength of that ball?
  • a) 1 x 10-34 m
  • b) 2 x 10-34 m
  • c) 2 x 10-32 m
  • d) 2 x 10-3 m
Q.3
Mass of a photon is given by 3.x 10-kg. Find it’s wavelength.
  • a) 0.67A°
  • b) 0.67nm
  • c) 0.37A°
  • d) 1.67A°
Q.4
Determining the exact position and velocity of an electron is impossible at a time.
  • a) True
  • b) False
Q.5
As per Heisenberg’s principle of uncertainty, the relation between relative momentum and relative position is __________
  • a) independent
  • b) equal
  • c) directly proportional
  • d) inversely proportional
Q.6
The uncertainty of a ball is given by 0.5A°. Then calculate the uncertainty in momentum.
  • a) 2.055 x 10-24 kgm/s
  • b) 1.015 x 10-24 kgm/s
  • c) 1.055 x 10-24 kgm/s
  • d) 1.095 x 10-24 kgm/s
Q.7
If the uncertainties in position and momentum are equal, then the uncertainty in position is given by ____
  • a) √h/4π
  • b) √h4π
  • c) √h/4
  • d) √h/π
Q.8
If the kinetic energy of an electron is 5J. Find out its wavelength.
  • a) 0.313 x 1015 m/s
  • b) 3.013 x 1015 m/s
  • c) 3.310 x 1015 m/s
  • d) 3.313 x 1015 m/s
Q.9
An object has a mass of 6 kg and velocity ofm/s. The speed is measured withaccuracy, then find out Δx in m.
  • a) 0.12676 x 10-34
  • b) 0.1566 x 10-34
  • c) 0.176 x 10-34
  • d) 0.276 x 10-34
Q.10
Δx. Δp ≥ h/4π.
  • a) True
  • b) False
0 h : 0 m : 1 s