Physics Past Questions and Answers

The mass of an empty density bottle is 30g. When filled with a liquid, the mass reduces to 38g. Calculate the apparent cubic expansivity of the liquid

A 6.25 x 10K^-1
B 6.25 x 10^-3K^-1
C 2.50 x 10^-3K^-1
D 2.50 x 10^-4K^-1

Question 1607:

A car traveling at 30ms\(^{-1}\) overcomes a frictional resistance of 100N while moving. Calculate the power developed by the engine. [1 hp = 0.75 kW]

A 0.23hp
B 0.40hp
C 4.00hp
D 4.40hp

Question 1608:

The quality of a note depends on its

A Frequency
B Pitch
C Overtones
D Amplitude

Question 1609:

A transverse wave can be distinguished from a longitudinal wave by

A Diffraction
B Relection
C Refraction
D Polarization

Question 1610:

Refraction of lights differs from reflection in that, in refraction i. at least two media are involved ii. there is a change in the direction of the ray iii. the speed of the ray changes. Which of the statements above is/are correct?

A I only
B I ad ii only
C Ii and iii only
D I and iii only