1.

Show that if 'p' and 'q' are distance of object and image from the principal focus of a concave mirror, then what is relation between p,q and f?

Answer»

`PQ = sqrt(f)`
pq = f
`pq = f^(2)`
`pq = (1)/(f)`

Solution :(c ) Here u = - (p + f)
v = - (q + f)
`therefore(1)/(f)=(1)/(v)+(1)/(u)=-(1)/(p+f)=(p+q+2f)/((p+f)(q+f))`
SOLVING, pq = `f^(2)`


Discussion

No Comment Found

Related InterviewSolutions