(A) Water at 20°C
(B) Honey at 20°C
(C) Water at 90°C
(D) Honey at 90°C
Answer: (B) Honey at 20°C
Category: Physics MCQs Class 9
Physics solved multiple choice questions (MCQs) for class 9 with answers.
The ratio of load and effort is called_____of any machine.
(A) Mechanical advantage
(B) In put
(C) Out put
(D) Efficiency
Answer: (A) Mechanical advantage
What is the unit of Power in system International?
(A) Newton
(B) Watt
(C) Joule
(D) Metre
Answer: (B) Watt
A satellite is revolving around the earth in a circular orbit. If the radius of the orbit is increased from R to 2R. What will be its velocity?
(A) 2v
(B) v²
(C) v/2
(D) v/√2
Answer: ()
According to the first condition of equilibrium_____.
(A) ∑T = 0
(B) ∑F = 0
(C) ∑Fx = 0
(D) ∑Fy = 0
Answer: (B) ∑F = 0