Related Questions

Light is incident normally on a grating of width 5 X 10-3 m with 2500 lines. What is the resolving power of the grating in the second order spectrum?
A crown glass prism with refractive index 6° is to be achromatized for red and blue color light with flint glass prism. What will be the angle of flint glass prism? (µr = 1.513, µr‘ = 1.645, µ2 = 1.523 and µ2‘ = 1.665, Where µr and µ2 are refractive indices of red and blue light respectively whereas, µr‘ and µ2‘ are refractive indices of red and blue light respectively for flint glass.)
The base of a right prism is a trapezium whose the length of parallel sides are 25 cm and 11 cm and the perpendicular distance between the parallellsides in 16 cm. If the height of the prism is 10 cm, then the volume of the prism is
The base of a prism is in the shape of an equilateral triangle. If the perimeter of the base is 18 cm and the height of the prism is 20 cm, then what is thevolume (in cm3) of the prism?
A prism has a regular hexagonal base with side 6 cm. If the total surface area of prism is 216√3 cm2, then what is the height (in cm) of prism?
A right prism has a square base with side of base 4 cm and the height of prism is 9 cm. The prism is cut in three parts of equal heights by two planesparallel to its base. What is the ratio of the volume of the top, middle and the bottom part respectively?
Base of a right prism is a rectangle, the ratio of whose length and breadth is 3 : 2. If the height of the prism is 12 cm and total surface area is 288 sq.cm the volume of the prism is :
Do the spectra observed by grating and prism depends on the nature of the material?
When white light passes through a glass prism we get a spectrum on the other side of the prism. In the emergent beam the ray which is deviated least is
একটি সমতল নিঃসরণ গ্রেটিং এ লম্বভাবে আলো আপতিত হচ্ছে। এতে সবুজ আলোর = λ=5400A° যে কোন একটি ক্রম, বেগুনী আলোর λ=4050A° পরবর্তী উচ্চক্রমের উপরে পর্দায় উপরি পতিত হচ্ছে। যদি অপবর্তন কোণ 30° হয়, তাহলে গ্রেটিং এ প্রতি cm এ রেখার সংখ্যা কত হবে?(The light is incident on a plane diffraction grating perpendicularly. The green line λ=5400A° with an order superimposes on the violet line λ=4050A° of the next higher order. If the angle of diffraction is 300, then how many lines are in the grating per cm?)