Question

Since 2019, the kilogram has been redefined based on which fundamental physical constant?

विकल्प

• Planck constant (h)

• Speed of light (c)

• Universal Gravitational constant (G)

• Avogadro's number (N_A)

Answer 1

Planck constant (h)

Explanation:

Since 2019, the kilogram has been defined by fixing the value of the Planck constant (h), making it independent of a physical object.