Which of the following is not a branch of physics?

S²=at⁴, here s is measured in meters and 't' in second. Then the unit of 'a' is

One kilo meter is equal to

"The most incomprehensible thing about the world is that it is comprehensible". who made the above statement?

What is the number of significant numbers in 200.0

If force = nx velocity, What is the dimensional formula of n

Which of the following is not the name of physical quantity.

Given that 'C' is the speed of light. A laser signal sent towards the moon returns after 't' seconds. The distance of the moon from the observer is

Which of the following is dimensionless quantity.

Which of the following is not the unit of the energy.