The dimensional formula of relative density is

Important Questions on Physical World, Units and Measurement

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IMPORTANT

Gamma Question Bank for Engineering Physics>Chapter 1 - Physical World, Units and Measurement>EXERCISE>Q 5

In the relation $y=a\cos \left(\omega t-Kx\right),$ the dimensional formula for $K$ is

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Gamma Question Bank for Engineering Physics>Chapter 1 - Physical World, Units and Measurement>EXERCISE>Q 6

Light year is a unit of:

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IMPORTANT

Gamma Question Bank for Engineering Physics>Chapter 1 - Physical World, Units and Measurement>EXERCISE>Q 7

Which unit is not for length?

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Gamma Question Bank for Engineering Physics>Chapter 1 - Physical World, Units and Measurement>EXERCISE>Q 8

Wavelength of ray of light is $0.00006 \mathrm{m}.$ It is equal to

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Gamma Question Bank for Engineering Physics>Chapter 1 - Physical World, Units and Measurement>EXERCISE>Q 9

Which of the following physical quantities represents the dimensional formula $\left[M^1{L}^{-2}{T}^{-2}\right]?$

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Gamma Question Bank for Engineering Physics>Chapter 1 - Physical World, Units and Measurement>EXERCISE>Q 10

In a given system of units, $1$ unit of mass $=2 \mathrm{kg},1$ unit of length $=5 \mathrm{m}$ and $1$ unit of time $=5 s.$ Then in this system, $1 \mathrm{N}$ represents

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Gamma Question Bank for Engineering Physics>Chapter 1 - Physical World, Units and Measurement>EXERCISE>Q 11

Solve the following:
(i) $22.101-0.9307$
(ii) $7+4$
(iii) $2.5\times 4$

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Gamma Question Bank for Engineering Physics>Chapter 1 - Physical World, Units and Measurement>EXERCISE>Q 12

A measured value $0.00289$ expressed in two significant figure is