FSC 1st Year Physics Chapter 1 Solved Exercise Notes PDF

In this post, I am sharing FSC 1st Year Physics Chapter 1 Solved Exercise & Numericals Notes PDF for the students of Intermediate Part 1. This is the 1st chapter from FSC part 1 Physics Book and its name is Measurements. Students can download the 11th class physics chapter 1 Measurements Notes PDF on their laptops or mobiles. These Class 11 Physics Notes are for all the boards working under Punjab Board like Gujranwala Board, Lahore Board, Faisalabad Board, Multan Board, Rawalpindi Board, Sargodha Board, DG Kahn Board, and Sahiwal Board. On ilmihub, I have already posted FSC 1st Year Physics Notes PDF chapter-wise.

Chapter 1 Measurements Solved Exercise & Numericals Notes PDF Download

Solved Exercise

A light year is the distance light travels in one year. How many meters are there in one light year: (speed of light = 3.0 x 10⁸ ms^-1).

Solution:

                        Time = t = 1 year = 365 days

                        t = 365 x 24 x 60 x 60 sec

                        t = 31536000 s

                        Speed of light = c = 3.0 x 10⁸ ms^-1

To find
                        distance = S =?

Calculation:
we know that    S = vt

                        V = c

                        S = ct

Putting the value, we get

                        S = 3 x 10⁸ x 3156000

                        S = 9.5 x 10¹⁵m

a) How many seconds are there in 1 years?
b) How many nanoseconds in 1 year
c) How many Year in one Second?

Solution:

a)  We already know that

                        1 year = 365 days

                        day = 24 hours

                        1 hours = 60 minutes

                        1 minute = 60 seconds

Therefore,

                        1 year = 365 x 24 x 60 x 60 sec

                   = 31536000 s

                        1 year = 3.1536 x 10 ⁷ s

b) As we know that

                        1 year = 3.1536 x 10 ⁷ s
                        one second = 10⁹ nanoseconds                           (1 nanosecond = 10^-9)

                        One year = 3.1536 x 10⁷ x 10⁹ nanoseconds

                        One year = 3.1536 x 10¹⁶ ns

c) We know that

                                1 year = 3.1536 x 10⁷ seconds

                      = 1/ 3.1536 x 10⁷ year

                        1 second = 3.17 x 10^-8 years

The length and the width of a rectangular plate measured to be 15.3cm and 12.80 cm respectively. Find the area of the plate.

            Length of the rectangular plate = l = 15.3 cm
            width of the rectangular plate = w = 12.80 cm
            area of rectangular plate = A =?
            We know that

                        A = L x W
                        = 15.3 x 12.80
                        = 195.84 cm²
                                                A = 196 cm² nearly

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