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ISRO Scientific Assistant Physics Question Paper. We covered all the ISRO Scientific Assistant Physics Question Paper mcqs in this post for free so that you can practice well for the exam.
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ISRO Scientific Assistant Physics Objective Question Paper for Students
Electrons are accelerated through a potential difference of 344 volts and undergo Diffraction by a crystal. If the first-order maximum appears at a glancing angle of 60°, what is the spacing between the crystal planes?
a. 0.38 Å
b. 1.2 Å
c. 0.98 Å
d. None of the above
Option a – 0.38 Å
X-rays with a wavelength of 1.32 Å are incident on a crystal and reflected at a glancing angle of 9°30′. What are the possible values for the spacing between the reflecting planes?
a. 4 Å, 8 Å, 12 Å
b. 4 Å, 2 Å, 1 Å
c. 4 Å, 5 Å, 6 Å
d. 1 Å, 2 Å, 3 Å
Option a – 4 Å, 8 Å, 12 Å
When X-rays of wavelength 0.36 Å are diffracted in the first order at an angle of 4.8° using Bragg’s crystal spectrometer, what is the interplanar distance of the crystal?
a. 2.15 Å
b. 4.5 Å
c. 3.2 Å
d. None of the above
Option a – 2.15 Å
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