Two lenses having f1:F2=2:3 has combination to make no dispersion. Find the ratio of their dispersive power?a)2:3 b)3:2 c)4:9 d)9:4​

b)3:2

Explanation:

The dispersive power is the reciprocal of the focal length:

Given the ratio of focal lengths:

Therefore,

P₁ : P₂ = 3 : 2

Hence, the correct option is:

b)3:2

the components of a vector are the parts of the vectors that are to each other.

b perpendicular

1.195000

explanation:

total mass=0.0117+0.0137+0.0881+0.0111

total mass= 0.01172kg

total velocity = 0.283-0.743+0.871-0.799+0.155+0.637+0.301=0.102

momentum=mv=0.1172*0.102=1.195000//