Question

a) 1:2
b) 2:1
c) 1:4
d) 4:1
4. An electron, proton, a-particle and hydrogen atom are moving with same kinetic energy. The associated
de Broglie wavelength will be longest for?
a) electron
b) proton
c) a-particle
d) hydrogen atom
5. A sphere rotating about its diameter has a rotational K.E of 360 J. If its angular speed is 30 rad/s, its
moment of inertia is
a) 0.4 kg-m
b) 0.6 kg-m
c) 0.8 kg-m
d) 1.2 kg -m
6. The condition for constructive interference is that the path difference should be
a) odd multiple of wavelength
b) integer multiple of half wavelength
c) odd multiple of half wavelength
d) even multiple of half wavelength.
7. A body performing uniform circular motion in a horizontal plane has a constant
a) velocity
b) acceleration
c) kinetic energy
d) displacement​

Answer 1

Answer:

2:1 , 0. 6 kg - m acceleration

Answer 2

Answer:

2:1 , 0.6 kg - m acceleration