Physics Past Questions and Answers

Which of the following machines does NOT apply the lever principle?

The accurate measurement of the relative density of substances in powder or granular form can be done using a beam balance and a

Which of the following statements is NOT true? Thermostats are used to control the temperature of

250g of lead at 170^oC is dropped into 100g of water at 0^oC. If the final temperature is 12^oC, the specific heat of lead is (specific heat of water is 4,200J/kg^oC)

An object 15cm high is 30cm from pin-hole camera. If the height of the image formed at the back of the camera is 10cm, the image distance is