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IGNOU BPHET-141 Elements of Modern Physics - IGNOU Solved Assignment (Latest)

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IGNOU BPHET-141 (January 2025 – December 2025) Assignment Questions

PART A
1. a) A spacecraft A has a speed 0.80c with respect to the Earth. If the speed of another spacecraft B with respect to spacecraft A is 0.50c, what is the speed of B with respect to the Earth
b) A particle is travelling through the Earth’s atmosphere at a speed of 0.6c. To an Earth-bound observer, the distance it travels is 4.0 km. How far does the particle travel in its own frame of reference?
c) A particle of rest mass 2.0 kg has an initial speed of 8 210 ms-1. A constant relativistic force of magnitude 6 1.5 10 N is exerted on the particle in the same direction as the initial relativistic momentum for 1000 s. Calculate the magnitudes of the initial and final relativistic linear momentum and its final speed.
d) A star emits light with wavelength 420 nm. An observer on earth measures the wavelength of the light received from the star to be 600 nm. Calculate the speed with which the star is moving.
2. a) Determine the wavelengths of the photons scattered at (i) 60 and (ii) 90 when Xrays of wavelength 4.5 pm are scattered from a target.

 

 

IGNOU BPHET-141 (January 2024 – December 2024) Assignment Questions

IGNOU BPHET-141 (January 2024 – December 2024) Assignment Questions

BPHET-141 Assignments Details

University : IGNOU (Indira Gandhi National Open University)
Title :Elements of Modern Physics
Language(s) : English, Hindi
Code : BPHET-141
Degree :
Subject : Physics
Course : Discipline Specific Electives (DSE)
Author : Gullybaba.com Panel
Publisher : Gullybaba Publishing House Pvt. Ltd.

IGNOU BPHET-141 (Jan 24 - Dec 24, Jan 25 - Dec 25) - Solved Assignment

Are you looking to download a PDF soft copy of the Solved Assignment BPHET-141 – Elements of Modern Physics Then GullyBaba is the right place for you. We have the Assignment available in Urdu language. This particular Assignment references the syllabus chosen for the subject of Hindi, English, for the Jan 24 - Dec 24, Jan 25 - Dec 25 session. The code for the assignment is BPHET-141 and it is often used by students who are enrolled in the BSCG, IGNOU CBCS Solved Assignments Degree. Once students have paid for the Assignment, they can Instantly Download to their PC, Laptop or Mobile Devices in soft copy as a PDF format. After studying the contents of this Assignment, students will have a better grasp of the subject and will be able to prepare for their upcoming tests.

Assignment Submission End Date-upto

The IGNOU open learning format requires students to submit study Assignments. Here is the final end date of the submission of this particular assignment according to the university calendar.

  • 30th April (if Enrolled in the June Exams)
  • 31st October (if Enrolled in the December Exams).

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  • All Solved Answers By IGNOU Experts.
  • Available for 3 Times for Download.
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  • Print Ready Format: A4 (21 x 29 x .20 cm (Width x Length x Height)
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