Science Standard 9>Chapter 1 - Measurement>textbook exercises>Q viii

MEDIUM

9th Tamil Nadu Board

IMPORTANT

Earn 100

How will you find the thickness of a one rupee coin?

Important Questions on Measurement

EASY

9th Tamil Nadu Board

IMPORTANT

Science Standard 9>Chapter 1 - Measurement>textbook exercises>Q ix

Inian and Ezhilan argue about the light year. Inian tells that it is

9.46 \times 10^{15} m

and Ezhilan argues that it is

9.46 \times 10^{12} km

. Who is right? Justify your answer.

MEDIUM

9th Tamil Nadu Board

IMPORTANT

Science Standard 9>Chapter 1 - Measurement>textbook exercises>Q ix

The main scale reading while measuring the thickness of a rubber ball using Vernier Caliper is

7 cm

and the Vernier scale coincidence is

6

. Find the radius (in

cm

) of the ball up to two decimal points.(Least count =

0.01 cm

)

MEDIUM

9th Tamil Nadu Board

IMPORTANT

Science Standard 9>Chapter 1 - Measurement>textbook exercises>Q ix

Find the thickness (in

mm

) of a five rupee coin with the screw gauge, if the pitch scale reading is

1 mm

and its head scale coincidence is

68

. Give the answer in up to two decimal points. (Least count =

0.01 mm

)

EASY

9th Tamil Nadu Board

IMPORTANT

Science Standard 9>Chapter 1 - Measurement>textbook exercises>Q ix

Find the mass (in

kg

) of an object weighing

98 N

. (

g = 9.8 {ms}^{- 1}

)