ICS Part 1 Physics English Medium Chapter 1 Online Short Questions Test with Answers

Online Short Questions For Chapter 1 "ICS Part 1 Physics Chapter 1 Short Questions Test "

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Physics - ICS Part 1 Physics Chapter 1 Short Questions Test

Question # 1

Discuss the conventions for using SI units?

  • Ans 1: The various conventions for using SI are given below.
    1. Full name of the unit does not begin with a capital letter even if named after a scientist.
    2. symbol of unit name after scientist has initial capital latter for for example N for newton Pa for pascal H3 for hertz etc
    3. The prefixes is written before an adjacent to the unit
    4. The combination of units is written each with one space a part For example , Torque =55 N m
    5. Double, triple etc prefixes are not allowed
    6. When a multiple of base unit is raised to a power. The power applies to the whole multiple and not just the base unit
    7. Before substituting values in the formula to calculate the final result make sure that all the included physical quantities are expressed in their SI units.
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Prepare Complete Set Wise Questions For Chapter 1 "ICS Part 1 Physics Chapter 1 Short Questions Test "

ICS Part 1 Physics Chapter 1 Short Questions Test - Set 1

Question # 1

Discuss the conventions for using SI units?

  • Ans 1: The various conventions for using SI are given below.
    1. Full name of the unit does not begin with a capital letter even if named after a scientist.
    2. symbol of unit name after scientist has initial capital latter for for example N for newton Pa for pascal H3 for hertz etc
    3. The prefixes is written before an adjacent to the unit
    4. The combination of units is written each with one space a part For example , Torque =55 N m
    5. Double, triple etc prefixes are not allowed
    6. When a multiple of base unit is raised to a power. The power applies to the whole multiple and not just the base unit
    7. Before substituting values in the formula to calculate the final result make sure that all the included physical quantities are expressed in their SI units.
Submit

ICS Part 1 Physics Chapter 1 Short Questions Test - Set 2

Question # 1

Discuss the conventions for using SI units?

  • Ans 1: The various conventions for using SI are given below.
    1. Full name of the unit does not begin with a capital letter even if named after a scientist.
    2. symbol of unit name after scientist has initial capital latter for for example N for newton Pa for pascal H3 for hertz etc
    3. The prefixes is written before an adjacent to the unit
    4. The combination of units is written each with one space a part For example , Torque =55 N m
    5. Double, triple etc prefixes are not allowed
    6. When a multiple of base unit is raised to a power. The power applies to the whole multiple and not just the base unit
    7. Before substituting values in the formula to calculate the final result make sure that all the included physical quantities are expressed in their SI units.
Submit

ICS Part 1 Physics Chapter 1 Short Questions Test - Set 3

Question # 1

How many meters are there in one light year?

  • Ans 1: Since S= vt
    S =ct
    S = (3 x 108ms-1)(365x24x60x60 s)
    S= 9.46x 1015m
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 4

Question # 1

Define basic units.

  • Ans 1: The units associated with the base quantities are called base units. Theses are meter, kilogram, second, ampere, kelvin, candela, mole.
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 5

Question # 1

What is physical significance of dimension of physical quantity?

  • Ans 1: Each base quantity is considered a dimension. It stands for the qualitative nature of the physical quantity. Dimensions give information about the nature of a physical quantity, its units of measure and correctness of physical equation.
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 6

Question # 1

Define the term "Joule" and convert 15 calories to joules?

  • Ans 1: The energy expanded when a force of one Newton move an object one meter in the direction in which force is applied. Where one joule is equal 107 Ergs and 1 cal =4.184 J and 15 cal = 4.184x15=62.76J
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 7

Question # 1

Define systematic errors. Explain how can we remove the effect of systematic errors?

  • Ans 1: Systematic Errors: Systematic errors occurs when repeated measurements of a quantity give the same values under the same conditions.
    This error is due to poor calibration or zero error in the stop watch. This error can be removed by applying correction factor.
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 8

Question # 1

Differentiate between precise and accurate measurement.

  • Ans 1: Precis Measurement: A measurement which has less absolute uncertainty is called precise measurement.

    Accurate Measurement: is the one which has less fractional or percentage error.
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 9

Question # 1

What do you mean by significant figures ? Give the rules for determining significant figures ?

  • Ans 1: Significant Figures:The combination of accurately known digits and the first doubtful digits during a measurement are known as as significant figures
    Rules for determining significant figures:
    1. All non-zero digits from '1' to '9' are significant for example in 36.473 m there are five significant figure
    2. All zero between two non-zero digits are significant for example in y= 4.03 m there are three significant figures
    3. The zero to the right of a decimal symbol and to the left of non-zero digits are not significant
    4. All zero to the right of a decimal appears after non-zero digits are significant
    5. In case of scientific notation the figures before the power of ten are significant
    6. In case of addition and subtraction the result obtained is retained to the measurement which is least precise in the data
    7. In case of multiplication and division the final result is retained to the measurement which contains the last number of significant figure
    8. In case of rounding of non-significant figures the following rules should be followed.
    • IF the dropping digits is less than '5' then it will be just ignored For example 863.73 is rounded to 863.7
    • If the dropping digits is greater than '5' then the last retained digit is increased by '1' for example 8.76 is rounded of 8.8
    • If the dropping digits is '5' and the last retained digits is even then it will remains uneffected. for example, 56.45 is rounded to 56.4
    • If the dropping digits is '5' and the last retained and the last retained digits is add than it will be increased by '1' for example 46.35 is rounded to 46.4
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ICS Part 1 Physics Chapter 1 Short Questions Test - Set 10

Question # 1

Why do we find it useful to have two units for the amount of substance kilogram and mole?

  • Ans 1: Both units are used to describe the amount of the substance. Kilogram is used for macroscopic objects or for macroscopic behavior of the objects while mole is used for microscopic object or on microscopic scale when number of atoms or molecules are concerned.
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ICS Part 1 Physics Short Questions Test

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