Question
A plastic foot ruler is held at a table edge and plucked
(a) One end of a plastic foot ruler is held tightly at the edge of a table and the other end is…
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Class: Class 10
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Question
Suhas uses a fixed pulley while Radha uses a movable pulley
To lift a load of 30 kgf, Suhas uses a single fixed pulley while Radha uses a single movable pulley. The displacement…
Question
A ball falls from 45 m and rebounds to 40 m
A ball of mass 20 g falls from a height of 45 m. It rebounds from the ground to a height of…
Question
Unit of work at subatomic scale scissors lever and work in three cases
(a) Name the unit of work done used on the subatomic scale. (b) To which class of lever does a pair of…
Question
Two equal forces act on the handle of a wheel
The diagram shows a wheel with a handle. Two forces, F1 and F2 of equal magnitudes are acting on the handle as…
Question
The graph represents the cooling curve of a liquid
The given graph represents the cooling curve of a liquid. (a) State the freezing temperature of the liquid. (b) Name the phase…
Question
Hailstorm temperature frying pan heat capacity and principle of calorimetry
(a) Atmospheric temperature after a hailstorm is greater than the temperature during the hailstorm. State True or False. (b) Which thermal physical…
Question
A convex lens forms a same-size image and then a three-times image
An object placed in front of a convex lens forms an image of the same size on a screen. Moving the object…
Question
Electromagnetic radiation used to detect fake currency and ray through a prism
(a) Name the electromagnetic radiation used to detect fake currency. (b) Redraw the diagram given below and complete the path of the…
Question
A glass block has a refractive index of 1.8
A type of glass block has a refractive index of 1.8. (a) Calculate the speed of light in this glass. (Given speed…