# UET SAMPLE PHYSICS QUESTIONS

University of Engineering And Technology (UET) Taxila is among top rated engineering universities of Pakistan. UET was established in 1975, with the aim of providing quality education to the upcoming generation, for first three years it functioned in Sahiwal and in 1978 it was permanently shifted to Taxila. At present total enrollment of undergraduate and postgraduate students is above 2000. The Governor of Punjab is the Chancellor and the Education Minister of Punjab is the Pro-Chancellor of the University. UET Taxila earned respectable name through their hard work and quality of education. Despite of their high standards, fee structure at UET Taxila is not very high and it’s affordable. Every year many applicants apply for admission but due to high competition very few can secure seats. Candidates who want to secure admission should work very hard for entry test.

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Topic:

Electromagnetism

Question:

The material used in florescent screen of CRO is?

Options:

• Magnesium
• Glass
• Phosphor
• Sodium

Correct Option:

Phosphor

Explanation:

A phosphor, most generally, is a substance that exhibits the phenomenon of luminescence. Somewhat confusingly, this includes both phosphorescent materials, which show a slow decay in brightness (>1 ms), and fluorescent materials, where the emission decay takes place over tens of nanoseconds.

Topic:

Heat & Thermodynamics

Question:

At triple point of water, the pressure of gas is 2680 Pa. By changing T the pressure changed to 4870 Pa. The value of T is?

Options:

1. 496 K
2. 438 K
3. 0
4. 438 F

Correct Option:

496 K

Explanation:

p.V = n.R.T

Since volume V and mass hence number of moles is constant:

p/T = n.R/V = constant

=> p1/T1 = p2/T2

=> T2 = T1.p2/p1

T1 is the triple point temperature of water, i.e

T1 = 0.010C = 273.16 K

Hence:

T2 = 273.16 K * 4870Pa/2680Pa = 496.38K

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 Option:

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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