# Measurement and Measuring Instruments

## Unit – V Measurement and Measuring Instruments - PHYSICS

Congratulations - you have completed Unit – V Measurement and Measuring Instruments - PHYSICS. You scored %%SCORE%% out of %%TOTAL%%. Your performance has been rated as %%RATING%%
 Question 1
The smallest value that any instrument can measure is called _______ of the instrument.
 A range B least count C millimeter D error
 Question 2
The values between the minimum measurable value and the maximum value that can be measured is called _______.
 A range B error C length D least count
 Question 3
If the value is greater than that of actual value, it is called _______ error.
 A negative B parallax C positive D zero
 Question 4
The least count of the Vernier is
 A 0.01 mm B 1 mm C 0.01 cm D 1 cm
 Question 5
The accuracy of digital balance
 A 1 g B .1 g C 10 g D 0.001 g
 Question 6
The SI unit of weight is
 A gram B kilogram C milligram D newton
 Question 7
_______ is used to measure the weight of human beings.
 A spring balance B weigh bridge C Medical scale D Digital balance
 Question 8
_______ is commonly used for measuring mass is shops.
 A Physical balance B Weigh bridge C Two pan balance D Hydraulic bridge
 Question 9
_______ is the most accurate clock.
 A quarts clock B mechanical clock C water clock D atomic clock
 Question 10
The earth is divided into _______ time zones.
 A 24 B 12 C 10 D 100
 Question 11
_______ is used to measure the weight of lorries.
 A Hydraulic scale B Weigh bridge C Spring balance D Digital balance
 Question 12
The clock based on the principle of the shadow of an object being formed on the ground
 A Water clock B sun dial C graduated candle D quarts clock
 Question 13
The SI unit of mass is _______.
 A newton B kilogram C gram D milligram
 Question 14
If the zero of the vernier scale is to the left of the main scale zero, the error is
 A positive B negative C none of these D parallax
 Question 15
In ancient times the position of _______ was used to find time during night.
 A moon B candles C shadow D stars
 Question 16
1.5 x 107ms is equivalent to
 A 0.5 s B 5 s C 50 s D 500 s
 Question 17
which of the following parts of a Vernier calipers are used to measure the internal diameter of a cylindrical pipe?
 A depth probe B retainer C lower jaws D upper jaws
 Question 18
Match the following:
 Sl.No Characteristics Value 1. 2. 3. 4. Least Count Range Positive Error Negative Error a) b) c) d) Greater than actual value Less than actual value Smallest value Between minimum and maximum value
 A 4 3 1 2 B 3 4 1 2 C 1 2 4 3 D 2 4 3 1
 Question 19
Match the following:
 Sl.No Clock Principle 1. 2. 3. 4. Atomic clock Quartz clock Water clock Mechanical clock a) b) c) d) Steady flow of water galileo’s discovery ceasium atom Liquid crystal display
 A 4 1 2 3 B 2 1 4 3 C 3 4 1 2 D 3 4 1 2
 Question 20
Reason and Assertion
• Assertion (A)  :  The unit of mass is kilogram.
•     Reason (R)      :  Mass of a body is the measure of the quantity of matter contained in a body.
 A A is correct R is wrong B R is correct A is wrong C A is correct R explains A D R does not explain A
 Question 21
• Assertion (A)  : Hydraulic scale is used to measure the weight of lorries.
• Reason  (R)     : Medical scale is used to measure the body weight of human beings.
 A A is correct R is wrong B R is correct A is wrong C A is correct R explains A D Both A and R are correct
 Question 22
• Assertion (A)  :  Atomic clock is the most accurate clock.
•     Reason (R)      :  Time period is directly proportional to length
 A A is correct R is wrong B R is correct A is wrong C A is correct R explains A D Both A and R are wrong
 Question 23
• Assertion (A)  : Water clocks are based on containers which are slowly filled with water.
•     Reason (R)      : One complete to and for motion of the bob is amplitude
 A A is correct R is wrong B R is correct A is wrong C A is correct R explains A D Both A and R are wrong
 Question 24
• Assertion (A)  : The symbol for nano is ŋ
•     Reason (R)      : nano is 10-9
 A A is correct R is wrong B A is wrong R is correct C A is correct R explain A D R does not explains A
 Question 25
If the zero of the Vernier scale is to the right of the main scale zero, the error is …………………
 A Positive B negative
 Question 26
…………… varies from place to place.
 A mass B weight
 Question 27
……………. Balance is used in jewellery shop
 A common balance B digital balance
 Question 28
…………. Is the most accurate clock
 A quartz clock B atomic clock
 Question 29
………….. time is calculated by the position of the sun.
 A Local time B standard time
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There are 29 questions to complete.

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