The velocities of two particles A and B are 0.05 and 0.02ms^(-1) respectively. The mass of B is five times the mass of A. The ratio of their de- Broglie's wavelength is

The velocities of two particles A and B are 0.05 and 0.02ms^(-1) respe

1.	The velocities of two particles A and B are 0.05 and 0.02ms^(-1) respectively. The mass of B is five times the mass of A. The ratio of their de- Broglie's wavelength is
Answer» `2:1` `1:4` `1:1` `4:1` Solution :Given velocity of particle `A=0.05ms^(-1)` velocity of PARTICLES `B=0.02 ms^(-1)` Let the mass of particle A=X :. The mass of particle `B=5x` de-Broglie's equation is `lambda=h/(mv)` for particle A `lambda_(A)=h/(x xx0.5)` for particle B `lambda_(B)=h/(5x xx0.02)` E.q (i)//(ii) `lambda_(A)/lambda_(B)=(5x xx0.02)/(x xx0.05)` `lambda_(A)/lambda_(B)=2/1` or `2:1`