The National University of Sciences and Technology (NUST) is a public University situated in the city of Islamabad, Pakistan. It is ranked by QS World Ranking’s as among the leading 50 universities under the age of 50, and is ranked by QS as among top 500 universities in the world. NET test consist of 200 questions from Physics, Chemistry/Computer, Mathematics/Biology, English and Intelligence/General knowledge. NUST fee structure is a bit high as compared to other universities but they also provide many scholarships to their students including need based scholarship. NUST also provide a vast range of Undergraduate Programs for applicants other than engineering. Eligibility criteria to apply for NUST is only 60% in FSc. Competition is very tough at NUST, so applicants must be fully prepared if they want to secure their admission.
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Waves and Oscillations
Waves in which the displacement of the medium is in the same direction as, or the opposite direction to, the direction of travel of the wave are called?
- Traverse waves
- Electromagnetic waves
- Compression waves
- None of the above
Longitudinal waves, also known as “l-waves”, are waves in which the displacement of the medium is in the same direction as, or the opposite direction to, the direction of travel of the wave. Mechanical longitudinal waves are also called compressional waves or compression waves, because they produce compression and rarefaction when travelling through medium. The other main type of wave is the transverse wave, in which the displacements of the medium are at right angles to the direction of propagation.
If energy of photon is 5 MeV. Kinetic energy of particles after pair production is?
- 4 MeV
- 5 MeV
- 6 MeV
- Not enough information given
Energy of photon = Energy required for pair production + KE of particles. Now energy required for pair production is 1.02 MeV so KE is approximately equal to 5-1 = 4 MeV.
The energy obtained in a nuclear reaction is derived from?
- Mass defect and binding energy
- All of these
All of these
The sum of the individual masses of the parts of a nucleus is less than their mass when they are bound into the nucleus producing mass defect. The mass from the mass defect is converted into the energy that holds the nucleus together and is released in fission. Fusion also produces energy when individual nuclei are forced to combine (fusion) and form new elements in a process that produces energy.