Question

(A) Force
(B) Acceleration
(C) Work
(D) Pressure
Which of the following is not a
fundamental unit?
(A) cm (B) kg
(C) centigrade (D) volt
Answer the following questions.
Star A is farther than star B. Which st
will have a large parallax angle?
What are the dimensions of the quant​

Answer 1

Answer:

Dimensions:

• Force= mass× acceleration

=MLT^-2

• Acceleration=LT^-2

• Work=force×displacement.

=MLT^-2 ×L

=ML^2 T^-2

• Pressure=force/area

= MLT^-2 / L^2

kilogram is the only fundamental unit among these..

totally there are seven fundamental quantities + two supplementary fundamental quantities

the 7 fundamental qualities are

• mass (kilogram- kg)
• length(metre - m)
• time ( second- s)
• electric current (ampere-A)
• luminous intensity ( candela- cd)
• amount of substance ( mole- mol)
• temperature ( kelvin- k)

two supplementary angles:

• Plane angle- radian - rad
• Solid angle -steradian -Sr

Star B will have large parallax angle ...