UNIT VII: Properties of Matter - Online Test
Q1. Copper of fixed volume V is drawn into a wire of length l. When this wire is subjected to a constant force F, the extension produced in the wire is ∆l. If Y represents the Young’s modulus, then which of the following graphs is a straight line?
Answer : Option C
Explaination / Solution:
No Explaination.
Q2. A certain number of spherical drops of a liquid of radius R coalesce to form a single drop of radius R and volume V. If T is the surface tension of the liquid, then
Answer : Option C
Explaination / Solution:
No Explaination.
Q3. The following four wires are made of the same material. Which of these will have the largest extension when the same tension is applied?
Answer : Option A
Explaination / Solution:
No Explaination.
Q4. The wettability of a surface by a liquid depends primarily on
Answer : Option D
Explaination / Solution:
No Explaination.
Q5. In
a horizontal pipe of non-uniform cross section, water flows with a velocity of
1 m s-1 at a point where the diameter of the pipe is 20 cm. The
velocity of water (m s-1) at a point where the diameter of the pipe
is
Answer : Option B
Explaination / Solution:
No Explaination.
