Physics Past Questions and Answers

How much heat is given out when a piece of iron mass 50g and specific heat capacity 460Jkg-1K-1 cools from 85°c to 25°c?

Which of the following is not a suitable method of reducing loss of heat from a piece of hot iron?

A bat emits a sound wave at a speed of 1650.00m/s and receives the echo 0.15s later. Calculate the distance of the bat from the reflector

Which of the following is/are characteristics of sound?
i. pitch
ii. Loudness
iii. Quality
iv. Noise

An image which can be formed on a screen is said to be ____________