All 10 questions from the Post-UTME Screening (Post-UTME) Physics 2008 Objective paper, with the correct answer and a full explanation for each. Free, no signup needed.
Advertisement
Which of the following waves is both mechanical and transverse?
Water waves are mechanical (need a medium) and transverse; sound is mechanical but longitudinal, while X-rays and radio waves are electromagnetic, not mechanical.
The thermometric substance of an absolute thermometer is:
An absolute (gas) thermometer uses a gas such as helium.
Which one of the following has the highest specific heat capacity?
Water has an exceptionally high specific heat capacity, the standard textbook answer among common substances.
Which of the following sources of energy is non-renewable?
Biomass is flagged as the most debatable/least strictly renewable of the four if not sustainably managed; the other three are consistently classified as renewable.
What type of electromagnetic radiation is used to take photographs in the haze?
Infrared radiation penetrates haze better than visible light for photography.
A man hears his echo from a nearby wall some seconds after he shouted. If the frequency of his voice is 260Hz and the wavelength is 1.20m, how far away is the wall?
Speed of sound = frequency x wavelength = 260 x 1.20 = 312 m/s (matching option A, with the exact distance depending on the echo time given in the original).
The colour of the positive column in a discharge tube is characteristic of the
The colour depends on the gas identity (its emission spectrum) and any fluorescent coating.
The trajectory of a projectile motion is
A projectile under gravity follows a parabolic path.
A body accelerates from rest with an acceleration of 8ms^-2 for 10 seconds. Calculate the distance covered in the 10th second.
Distance in nth second = u + a(2n-1)/2 = 0+8(19)/2 = 76m.
What is the number of neutrons in the uranium isotope ²³⁸U (Z=92)?
Neutrons = mass number - protons = 238-92 = 146.
Advertisement
…and/or go further with premium services and No Ads.