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
• a) 0.67A°
• b) 0.67nm
• c) 0.37A°
• d) 1.67A°
Q.4
• 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
• 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
• a) True
• b) False