Home 1st Year Physics Notes FSC 1st Year Physics Chapter 1 Solved Exercise Notes PDF

# FSC 1st Year Physics Chapter 1 Solved Exercise Notes PDF

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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.

## 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 yearc) How many Year in one Second?

Solution:

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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