The ratio of resolving power of telescope, when lights of wavelength 4400 mathringA and 5500 mathringA are used, is

Question

The ratio of resolving power of telescope, when lights of wavelength 4400 mathringA and 5500 mathringA are used, is  (A) 16: 25 (B) 4: 5 (C) 9: 1 (D) 5: 4

Tardigrade Admin · Accepted Answer

Resolving power propto (1/λ) (θ1/θ2)=(λ2/λ1)=(5500/4400)=(5/4)

Q. The ratio of resolving power of telescope, when lights of wavelength $4400 \overset{˚}{A}$ and $5500 \overset{˚}{A}$ are used, is _______

$16 : 25$

$4 : 5$

$9 : 1$

$5 : 4$

Resolving power $\propto \frac{1}{λ}$
$\frac{θ _{1}}{θ _{2}} = \frac{λ _{2}}{λ _{1}} = \frac{5500}{4400} = \frac{5}{4}$

Q. The ratio of resolving power of telescope, when lights of wavelength 4400A˚ and 5500A˚ are used, is _______

16:25

4:5

9:1

5:4