Courses » WAEC » WAEC Physics » Physics Exam Topics » 2005 - Questions and Answers

2005 - WAEC Physics Past Questions and Answers - page 3

21

The energy required to change a solid to liquid at constant temperature is called

A
thermal capacity
B
has lower specific heat capacity
C
latent heat of fusion
D
latent heat of vaporisation
Ask EduPadi AI for a Detailed Answer
22

Which of the following statements about boiling and evaporation at atmospheric pressure is correct?

A
evaporation and boiling of water take place at 100o
B
evaporation of water takes place at a temperature greater than 100oC, while boiling takes place at 100oC
C
evaporation of water takes place at 100oC while boiling takes place at a higher temperature
D
boiling takes place at 100o while evaporation my take place at temperatures lower than 100oC
Ask EduPadi AI for a Detailed Answer
23

Which of the following statements is correct?

A
the density of a liquid decreases when it expands
B
the density of a liquid increases when the liquids are heated
C
the real expansivity of a liquid is less than its apparent expansivity
D
a liquid changes to solid when heated to a sufficiently high temperature
Ask EduPadi AI for a Detailed Answer
24

The pressure exerted by a given mass of gas in a container

A
decreases if the container is heated
B
increases if the molecules of the gas move faster
C
increases if the container is doubled
D
decreases as the kinetic energy of the gas molecules inceases
Ask EduPadi AI for a Detailed Answer
25

Which of the following statements about a progressive mechanical wave is correct?

A
it can be a plane polarised
B
its energy is localised at specific points of its profile
C
it does not require a material medium for its propagation
D
its frequency remains constant as it travels between different media
Ask EduPadi AI for a Detailed Answer
26

The distance between two points in phase on a progressive wave is 5cm. If the sped of the wave is 0.2ms-1, calculate its period

A
4.00s
B
2.50s
C
0.25s
D
0.04s
Ask EduPadi AI for a Detailed Answer
27

Radio waves travel in air at 3.0 x 108ms-1. If the waves enter water of refractive index (\frac{4}{3}), calculate the speed of radio waves in water

A
4.33 x 108ms-1
B
4.00 x 108ms-1
C
2.25 x 108ms-1
D
1.33 x 108ms-1
Ask EduPadi AI for a Detailed Answer
28

The amplitude of a wave is the

A
distance travelled by the wave in a complete cycle of its motion
B
maximum diplacement of the wave particle from the equilibrum position
C
separation of two adjacent particles vibrating in a phase
D
distance between two successive troughs of the wave
Ask EduPadi AI for a Detailed Answer
29

Which of the following optical instruments does not depend on the use of plane mirrors?

A
kaleidoscope
B
simple microscope
C
sextant
D
simple periscope
Ask EduPadi AI for a Detailed Answer
30

A ray of light is incident normally on a plan mirror. If the incident ray is kept fixed while the mirror is rotated through an angle of 30o, determine the initial and final angles of reflection respectively

A
0o and 60o
B
90o and 30o
C
0o and 30o
D
90o and 60o
Ask EduPadi AI for a Detailed Answer
Please share this, thanks:

Study with EduPadi CBT App?

Courses

SS1SS2SS3JAMBWAECJSS1JSS2JSS3

Featured Posts

137 Best Happy New Week Wishes, Messages & PrayersJAMB Past Questions & Answers PDF (FREE downloads, all subjects)127 Heartfelt Good Morning Love Messages for Her to Brighten Her DayThe Life Changer 130 Possible Questions And Answers10 Reasons Doctors Are Better Than Teachers - Argumentative EssayBest Commercial Courses To Study In Nigeria (Highest Paid)SS1 Physics Scheme of Work (1st, 2nd, 3rd term)Reasons Teachers Are Better Than Doctors - ArgumentativeFree JAMB CBT Practice with Past Questions With Answers – Study OnlineJAMB 2025 WhatsApp Group Chat For Candidates (Join Now)