NUST NET SAMPLE PHYSICS QUESTIONS

National University of Science and Technology NUST is top rated engineering university of Pakistan. NUST was founded in 1991 with an aim of providing quality education to the students and to create better carrier opportunities for them so that they can succeed in their lives. NUST grow up dramatically in a very little time period because of their focus towards quality education and dedication toward their work. NUST offer many undergraduate programs every year, NUST test is also considered to be one of the most difficult test in Pakistan. Due to their quality education, the fee is quite high but they facilitate poor and needy students through need base scholarship.

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Topic:

Physics of solids

Question:

A piece of Cu and another of Ge are cooled from room temp to -1500 C. The resistance of?

Options:

  • Each of them increases
  • Cu increases and that of Ge decreases
  • Cu decrease and that of Ge increases
  • Each of them decreases

Correct option:

Cu decrease and that of Ge increases

Explanation:

The resistivity of semiconductors increases with a decrease in the temperature while for conductors it decrease with a decrease in the temperature. As opposed to metals, semiconductors have high negative temperature.

Topic:

Alternating Current

Question:

A DC battery can pass current continuously through?

  1. Resistor
  2. Capacitor
  3. Inductor

Options:

  • I only
  • I and II only
  • I and III only
  • I, II and III

Correct Option:

  • I and III only

Explanation:

DC current cannot flow through a capacitor continuously because of the presence of an insulating medium between the plates of the capacitor.

Topic:

Nuclear physics

Question:

The energy obtained in a nuclear reaction is derived from:

Options:

  • Mass defect and binding energy
  • Fission
  • Fusion
  • All of these

Correct Answer:

All of these

Explanation:

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.

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