Physics Revision Questions and Answers

Radioactivity Questions And Answers (part 2)
- By guru
- . March 14, 2022
Radioactivity Questions 1.  (a) Define radioactive decay  (b) A radioactive element decays to 1/128 of its original activity after 49 days. Determine its half –life

X-ray Questions And Answers (part 2)
- By guru
- . March 14, 2022
X-ray Questions  1.  Give one use of X –rays in medicine  2.  State the factor that affects:-  (i) The intensity of X-rays  (ii)

ELECTRICITY & Electronics Questions And Answers
- By guru
- . March 14, 2022
ELECTRICITY & Electronics Questions 1.  State one advantage of a lead-acid accumulator over a dry cell  2.  State one defect of a simple cell

Photoelectric effect Questions And Answers (part 2)
- By guru
- . March 14, 2022
Photoelectric effect Questions 1.  (a) Define the following:  (i) Photoelectric effect  (ii) threshold wavelength  (b) The variation of frequency f with the

Floating and sinking Questions And Answers (part 2)
- By guru
- . March 14, 2022
Floating and sinking Questions 1. Â Define thermionic emission 2. Â (a) State:- (i) Archimedes’s principle (ii) The law of floatation (b) The solid of mass 12kg,

Work, energy and power Questions And Answers (part 2)
- By guru
- . March 14, 2022
 Work, energy and power Questions 1.  Given that a lamp is rated 45W 240V. Calculate the resistance of the heating element.  2.  An electric

Waves II Questions And Answers (part 2)
- By guru
- . March 14, 2022
Waves II Questions 1.  (a) (i) Distinguish between stationary and progressive waves   (ii) State a reason why a closed tube or pipe

Quality of heat Questions And Answers (part 2)
- By guru
- . March 14, 2022
Quality of heat Questions 1. Â 500g of a metal is heated to 100oC and then placed in a 200g mass of water at 15oC. If

Thin lenses Questions And Answers (part 2)
- By guru
- . March 14, 2022
Thin lenses Questions 1. Â The figure below shows how rays from a distant and near objects are focused inside a human eye with a certain

Sound II Questions And Answers (part 2)
- By guru
- . March 14, 2022
Sound II Questions 1. Â The human ear can distinguish two sounds as separate only if they need it at least 0.1 seconds apart. How far

Refraction of light Questions And Answers (part 2)
- By guru
- . March 14, 2022
Refraction of light Questions 1. Â The refractive index of paraffin is 1.47 and that of glass is 1.55. Determine the critical angle of a ray

Resistors Questions And Answers (part 2)
- By guru
- . March 14, 2022
Resistors Questions 1. Â Your are provided with the following apparatus: connecting wires, an ammeter, fixed resistors, a voltmeter, a variance resistor, a switch and two

Machines & inclined planes Questions And Answers (part 2)
- By guru
- . March 14, 2022
Machines & inclined planes Questions 1.  (a) Distinguish energy from work  (b) A lady uses a ramp to lift 1500N load though a vertical

Linear motion Questions And Answers (part 2)
- By guru
- . March 14, 2022
Linear motion Questions 1. Â A footballer kicks a ball of mass 0.6kg initially at rest using a force of 720N. If the foot was in

Reflection at curved surfaces and spherical surfaces Questions And Answers (part 2)
- By guru
- . March 14, 2022
Reflection at curved surfaces and spherical surfaces Questions 1. Â (a) The table below shows the object distance u and the corresponding image distance v of

Magnetsim Questions And Answers (part 2)
- By guru
- . March 14, 2022
Magnetsim Questions 1. Â (a Two pins are attached to each of the magnets as shown below. Â (i) (ii) Â Â Â Explain the behaviour of