About This Test
This practice test is designed to help you prepare for the CustomExam exam. It contains 10 questions and has a time limit of 20 minutes.
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Important Questions
A Grade 10 pupil is asked to measure the volume of a wire 1m long and 2mm in diameter accurately. Which measuring instruments should be used for length and diameter respectively?
A particle moves in a circular path at constant speed. Which statement about the force acting on it is correct?
A light rigid rod 40cm long is supported horizontally at its end by two vertical strings. A weight of 50N is attached 10cm from end X. What is the tension in string Q at the opposite end?
A simple machine with velocity ratio 5 lifts a load of 600N through 20m vertically. If its efficiency is 80%, what is the effort applied?
An Eskimo weighing 40kg stands on snow wearing snow shoes with a total contact area of 5m². What pressure does he exert on the snow? (g = 10 N/kg)
A piece of aluminium of mass 0.5kg heated to 100°C is placed in 0.4kg of water at 10°C. The final temperature is 30°C. Given specific heat capacity of water is 4200 J/kg°C, what is the specific heat capacity of aluminium?
A boy standing 150m in front of a building fires a pistol. A boy 350m away hears two bangs 1 second apart. What is the speed of sound?
A ray of light enters a glass block with refractive index 1.51 at 45°. What is the angle of refraction inside the glass?
Which row best describes molecular movement in solids, liquids, and gases respectively?
A radioactive substance has a half-life of 15 minutes. If the original mass is 10 kg, what mass remains after 1 hour?