Question 168: Ray Optics

Question

The aperture of the objective is 24.4 cm. The resolving power of this telescope, if a light of wavelength 2440 $$\mathop A\limits^o $$ is used to see th object will be :

Accepted Answer

$$R.P. = {1 \over {1.22\,\lambda /a}}$$
$$ = {{24.4 	imes {{10}^{ - 2}}} \over {1.22 	imes 2440 	imes {{10}^{ - 10}}}}$$
$$ = 8.2 	imes {10^5}$$

Answer

8.1 $$	imes$$ 106

Answer

10.0 $$	imes$$ 107

Answer

8.2 $$	imes$$ 105

Answer

1.0 $$	imes$$ 10$$-$$8

Ray Optics

The aperture of the objective is 24.4 cm. The resolving power of this telescope, if a light of wavelength 2440 $\mathop A\limits^o $ is used to see th object will be :

Choose the correct answer: