The reddish appearance of the sun at sunrise and sunset is due to
The reddish appearance of the sun at sunrise and sunset is due to Options (a) the colour of the sky…
6 years ago
Ray Optics
For the normal eye, the cornea of eye provides a converging power of 40D
For the normal eye, the cornea of eye provides a converging power of 40D and the least converging power of…
6 years ago
The radius of curvature of the convex face of a plano-convex lens is 12 cm
The radius of curvature of the convex face of a plano-convex lens is 12 cm and the refractive index of…
6 years ago
Radii of curvature of a converging lens are in the rato 1:2. Its focal length
Radii of curvature of a converging lens are in the ratio 1:2. Its focal length is 6 cm and refractive…
6 years ago
The magnifying power of a telescope is 9. When it is adjusted for parallel rays
The magnifying power of a telescope is 9. When it is adjusted for parallel rays the distance between the objective…
6 years ago
The magnifying power of the astronomical telescope for normal adjustment is 50.
The magnifying power of the astronomical telescope for normal adjustment is 50. The focal length of the eyepiece is 2…
6 years ago
A small angled prism of refractive index 1.4 is combined with another small angled prism
A small angled prism of refractive index 1.4 is combined with another small angled prism of refractive index 1.6 to…
6 years ago
When a biconvex lens of glass having refractive index 1.47 is dipped in a liquid
When a biconvex lens of glass having refractive index 1.47 is dipped in a liquid, it acts a plane sheet…
6 years ago
The distance of the moon form the earth is 3.8×10⁵ km. Supposing that the eye
The distance of the moon form the earth is 3.8x10⁵ km. Supposing that the eye is most sensitive to the…
6 years ago
A person has a minimum distance of distinct vision as 50 cm. The power of lenses
A person has a minimum distance of distinct vision as 50 cm. The power of lenses required to read a…
6 years ago