Question

Q.35. Which of the following is not a primary quantity?
O a. Mass (M)
O b. Temperature (8)
c. Time (T)
O d. None of the above​

Answer 1

option d is wright

none of the above

Answer 2

Answer:

The answer is None of the above (option d).

Explanation:

Primary quantities, more popularly known as fundamental quantities are the quantities that are easily measurable. It can not be measured practically but can be derived practically.

By using these fundamental quantities, all other terms are derived, hence those quantities are called Derived Physical quantities.

The list of fundamental/primary quantities is:-

• Length
• Mass
• Time
• Electric current
• Temperature
• Amount of substance
• Luminous intensity
• Plane angle
• Solid angle

The last two i.e. Plane angle and Solid angle are used in the SI system and are subsidiary units.

It is clearly visible that Mass, Temperature, and Time are fundamental quantities.

So that's why the answer will be None of the above.