Post Utme Physics Past Questions and Answers

Question 781:

The accurate measurement of the relative density of a substance in its powdered form in done with a beam balance and ____________

A. An eureka can
B. A burette
C. A pipette
D. A density bottle

Question 782:

Which of the following Is used for the correction of short-slghtedness?

A. Concave lens
B. Concave mirror
C. Convex mirror
D. Convex lens

Question 783:

If the volume of a gas increases steadlly as the temperature decreases at constant pressure, the gas obeys

A. Pressure law
B. Charles' law
C. Graham's law
D. Boyles law

Question 784:

Which of the following electromagnetic waves has the highest frequency?

A. Infrared -ray
B. \(x\)-ray
C. Ultra-vlolet ray
D. Radio waves

Question 785:

A cannon is fired from town \(x\). after how long is the sound heard at a town \(y\), \(4.95 \mathrm{~km}\) away (velocity of sound in
air \(=330 \mathrm{~ms}^{-1}\) )

A. \(12 \mathrm{~s}\)
B. \(15 \mathrm{~s}\)
C. \(30 \mathrm{~s}\)
D. \(10 \mathrm{~s}\)