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ICSE Class 8 Mid-term 2023 : Physics

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Taronish Mullan
Villa Theresa High School (VTS), Mumbai
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Villa Theresa high school STD: VIII First Terminal Exam MARKS: 40 DATE: 4/09/21 SUBJECT: Physics TIME: 1 Hr. Question 1 a. A potter turns his wheel by applying a force through the stick near the rim of wheel. Give reason. [2] b. State true or false: i. The density of piece of brass will change by changing its shape or size. ii. Pressure increases with an increase in the thrust on the surface. [2] c. Fill in the blanks: i. In a door the handle is provided ________from the hinges. ii. Evaporation takes place from the ________ of the liquid. [2] d. Define work and state its S.I. unit. [2] e. The density of 234 g of a certain metal is 7.8 g cm-3. Find its volume. [2] Question 2 a. It is easier to lift a stone under water than in air. Give reason. [2] b. Sleepers are put below the rails. Give reason. [2] c. State 2 factors affecting liquid pressure. [2] d. A force of 200 N moves a body through a distance of 2 m in the direction of the force. Calculate the work done by the force. [2] e. Define relative density and state its S.I. units. [2] Question 3 a. State the 3 factors on which rate of evaporation depends. [3] b. A weightlifter lifts a mass of 250 kg to a height of 0.5 m. Find the work done if the force of gravity on mass 1 kg = 10 N. [3] c. Distinguish between boiling and evaporation. [4] Question 4 a. The diagram given below shows a body floating in three different liquids A, B and C at different levels. [3] i. In which liquid does the body experience the greatest buoyant force? ii. Which liquid has greatest density? iii. Which liquid has least density?

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