UPTET · Mathematics and Science (Paper II)
Forms of energy, conservation, sound production and propagation.
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Q1 · Work, Energy and Sound · EASY
A boy pushes a box of mass 10 kg with a force of 20 N over a distance of 5 m on a frictionless horizontal surface. How much work is done by the boy on the box?
Q2 · Work, Energy and Sound · EASY
Which of the following is an example of potential energy being converted into kinetic energy?
Q3 · Work, Energy and Sound · MEDIUM
Sound cannot travel through which of the following?
Q4 · Work, Energy and Sound · MEDIUM
A crane lifts a load of 500 kg to a height of 10 m. If the acceleration due to gravity is 10 m/s², what is the work done by the crane against gravity?
Q5 · Work, Energy and Sound · HARD
The frequency of a sound wave is 500 Hz and its wavelength is 0.66 m. What is the speed of sound in the medium?