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…
7 years ago
Physics
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…
7 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…
7 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…
7 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…
7 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…
7 years ago
A thin prism of angle 15⁰ made of glass of refractive index µ₁ = 1.5 is combined
A thin prism of angle 15⁰ made of glass of refractive index µ₁ = 1.5 is combined with another prism…
7 years ago
When an object is placed 40cm from a diverging lens, its virtual image is formed 20 cm
When an object is placed 40cm from a diverging lens, its virtual image is formed 20 cm from the lens.…
7 years ago
Which one of the following is not due to total internal reflection?
Which one of the following is not due to total internal reflection? Options (a) working of optical fibre (b) Difference…
7 years ago
An object is 8 cm high. It is desired to form a real image 4 cm high at 60 cm from
An object is 8 cm high. It is desired to form a real image 4 cm high at 60 cm…
7 years ago