Electromagnetic Theory-Diffraction (CSIR (Council of Scientific & Industrial Research) Physical Sciences): Questions 1 - 1 of 1

Access detailed explanations (illustrated with images and videos) to 464 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. Unlimited Access for Unlimited Time!

View Sample Explanation or View Features.

Rs. 300.00 or

How to register?

Question number: 1

» Electromagnetic Theory » Diffraction

Edit

Appeared in Year: 2014

MCQ▾

Question

When laser light of wavelength falls on a metal scale with 1 mm engravings at a grazing angle of incidence, it is diffracted to from a vertical chain of diffraction sports on a screen kept perpendicular to the scale. If the wavelength of the laser is increase by 200 nm, the angle of the first – order diffraction spot changes from to – (December)

Choices

Choice (4)Response

a.

b.

c.

d.

Developed by: