Efficiency of conduction in liquids and gases compared to solids is
less efficient than solid
more efficient than solids
equally efficient to solids
efficiently may vary
Correct answer is A
Efficiency of conduction in liquids and gases compared to solids is less efficient than solid.
I only
II only
III only
I & III only
Correct answer is C
- the total energy at any point is a combination of the P.E and K.E
- the sum of PE and KE at any point is always constant not the ratio of P.E to K.E
the resultant of the parallel forces is zero
the algebraic sum of all the moments of the forces is zero
all the parallel forces must not be equal in magnitude and direction
the sum of forces in one direction must be equal to the sum of forces in the opposite direction
Correct answer is C
all the parallel forces must be equal in magnitude and direction
1
2
None Of The Above
4
Correct answer is C
At the lowest point i.e at point 2
20 N/m\(^2\)
100 N/m\(^2\)
400 N/m\(^2\)
300 N/m\(^2\)
Correct answer is A
| P | = | F
A |
= | mg
A |
= | (ρ × v) × g
A |
= | ρ × (A × h) × g
A |
P = 100 × 2 × 10\(^{-2}\) × 10 = 20 N/m\(^2\)