Home
Class 11
PHYSICS
What meant by one candela? And Which bas...

What meant by one candela? And Which base quantity is measured by this unit? (or) Define one candela (S.I standard for Luminous intensity)

Text Solution

Verified by Experts

One candela is the luminous intensity in a given direction, of a source that emits monochromatic radiation of frequency `5.4 xx 10^(14) Hz` and that has a radiant intensity of `(1)/(683)` watt/steradian in that direction.
Promotional Banner

Topper's Solved these Questions

  • NATURE OF PHYSICAL WORLD AND MEASUREMENT

    PREMIERS PUBLISHERS|Exercise OTHER IMPORTANT QUESTIONS & ANSWERS (III. Short Answer Questions.)|24 Videos

  • NATURE OF PHYSICAL WORLD AND MEASUREMENT

    PREMIERS PUBLISHERS|Exercise OTHER IMPORTANT QUESTIONS & ANSWERS (I. Multiple Choice Questions.)|152 Videos

  • MOTION OF SYSTEM OF PARTICLES AND BODIES

    PREMIERS PUBLISHERS|Exercise OTHER IMPORTANT QUESTIONS & ANSWER (NUMERICAL PROBLEMS)|60 Videos

  • OSCILLATIONS

    PREMIERS PUBLISHERS|Exercise OTHER IMPORTANT QUESTIONS & ANSWERS ( CONCEPTUAL QUESTIONS.)|24 Videos

Similar Questions

Explore conceptually related problems

Define one radian (S.I standard for plane angle)

Define one steraedian(S.I standard for solid angle)

What is the SI unit of Luminous Intensity?

What is meant by S.I. unit ?

What is the SI unit of amount of substance? (or) What is one mole in SI system of units? (or) Define one mole (S.I standard for amount of substance)

Define th SI unit of electric current. (or) What is one second in SI system of units? (or) Define one ampere (S.I standard for current)

Luminous intensity is measured by a______ which give the luminous intensity in terms of candela.

Define the SI unit of time. (or) What is one second in SI system of units?

Define the SI unit of mass (or) What is one kilogram in SI system of units?

What is the SI unit of temperature and define it? What is one kelvin in SI system of units?