Units and dimensions

Light year is the unit of

• time

• distance

• sunlight intensity

• mass

The dimensions of kinetic energy is same as that of

• Force

• pressure

• work

• momentum

Candela is the unit of

• magnetic flux

• intensity of electric field

• luminous intensity

• charge

1 nanometer is equal to

• 10^-10 m

• 10^-6 m

• 10^-9 m

• 10^-3 m

Which of the following is not a dimensional constant?

• gravitational constant

• Planck's constant

• π

• gas constant

Name the quantity represented by the dimensional formula M¹L^-3T⁰

• specific gravity

• linear mass density

• impulse

• density

Which of the following is not a dimensionless variable?

• density

• specific gravity

• angle

• strain

Momentum per unit volume has the same dimension as

• work

• force

• pressure

• torque

Tags

NGSS.HS-PS2-2

Precision of measurement depends on

• least count of measuring instrument

• temperature of the surroundings

• carefulness of observer

• all of the above

The parallax method has been used for measuring distance of stars, which are

• less than 100 light years away

• more than 100 light years away

• neither less nor more than 100 light years away

• none of the above