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PHYSICS [2 Mark Question Answer]

Physical Quantities and Measurement · ICSE STD 7 (ICSE - English Medium). 7 questions.

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[2 Mark Question Answer]

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7 questions · timed · auto-graded

Question 12 Marks
The figure given below shows the distance travelled by 2 bodies in certain time. What will you conclude from this figure?
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Answer
From the given graph, we can see that Body 2 covers more distance than Body 1 in the same time interval. Hence, we can conclude that speed of Body 2 is more than that of Body 1.
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Question 22 Marks
Find the mass of $50 \ cm3$ of silver if its density is $10.5 g \ cm^{-3}.$
Answer
$\text { Mass of silver }=?$
$\text { Volume }=50 \ cm ^{-3}$
$\text { Density }=10.5 g \ cm ^{-3}$
$M=D \times V=50 \times 10.5=525 g $
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Question 62 Marks
How can we compare the fastness or slowness of two moving objects?
Answer
We can compare the fastness or slowness of two moving objects in terms of speed. For example, if we see a car running fast, we say that its speed is fast and if we see a bicycle moving slow, we say that its speed is slow.
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Question 72 Marks
Write a short note on some devices that are used to measure the volume of liquids.
Answer
The volume of a liquid is usually measured by measuring cans of different shapes and sizes. Measuring cans are available in capacities ranging from 50 mL to 5 L. Conical measuring cans are used to measure liquids such as kerosene and petrol. Cylindrical measuring cans with long handles are commonly used to measure milk and edible oil.
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[2 Mark Question Answer] - PHYSICS STD 7 Questions - Vidyadip