SI அலகுகள் (Units) முக்கிய கேள்வி பதில்கள் / TNPSC SCIENCE SI UNITS QUESTION & ANSWER

SI அலகுகள் (Units) முக்கிய கேள்வி பதில்கள்

QI. What is the Sl unit of heat?

Ans. Kg. m. 2 / sec. 3 (Kg.m2/s3) – joule (J)

Q.2. What is the SI unit of density?

Ans. kg/m 3 (Kg/m3)

Q.3. What is the Sl unit of velocity?

Ans. meter/second (m/s)

Q4. What is the Sl unit of acceleration?

Ans. meter / second 2 (m/s2)

Q5. What is the Sl unit offorce and weight?

Ans. Newton (N)

Q6. What is the Sl unit of electric energy?

Ans. electron voltage

Q.7. What is the Sl unit of angular momentum?

Ans. Kg. m. 2 / sec. (Kg.m2/s)

Q.8. What is the Sl unit of work and energy?

Ans. joule (J)

Q.9. What is the Sl unit of power?

Ans. Watt (W)

Q.IO. What is the Sl unit of magnetic induction?

Ans. Tesla or Beber / m. 3 (wb/m2)

Q.11. What is the Sl unit of surface tension?

Ans. Newton / m (N/m)

Q.I2. What is the Sl unit of angular velocity?

Ans. Radian/sec. (rad/s)

Q.13. What is the Sl unit of resistance?

Ans. ohm(2)

Q.14. What is the Sl unit of charge?

Ans. Coulomb (C)

Q.I5. What is the Sl unit of distance?

Ans. light years / metre

Q.16. What is the Sl unit of luminous intensity?

Ans. candela

Q.17. What is the Sl unit of electric current?

Ans. ampere (A)

Q.18. What is the Sl unit of temperature?

Ans. Kelvin

Q.19. What is the Sl unit of luminous flux?

Ans. lumen (lm)

Q.20. What is the Sl unit of magnetic flux?

Ans. weber (Wb)

Q.21. What is the Sl unit of wavelength?

Ans. angstrom / meter

Q.22. What is the Sl unit of specific heat? 

Ans. joule per kilogram/ kelvin

Q.23. What is the Sl unit of potential difference?

Ans. Voltage (V)

Q.24. What is the Sl unit of power of a lens?

Ans. diopter (D)

Q.25. What is the Sl unit of luminous density?

Ans. Lux (LUX)