Download App

Work And Energy — Science STD 9 — Question

Rajasthan BoardEnglish MediumSTD 9ScienceWork And Energy1 Mark
Question
Which of the following statements is incorrect?
✓

Answer

  1. All the central forces are non-conservative
Explanation:
Non-conservative force such as friction depends on other factors, such as velocity and dissipative and no potential energy can be defined for them.
Hence central forces are non-conservative.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q. [1 M]" from Work And Energy→Work And Energy — all question types→Science STD 9 question papers→Rajasthan Board STD 9 question papers→Rajasthan Board question paper generator→

Similar questions

An elevator with load, weighing 500kg is moving up with a velocity of 0.2ms. The power of the motor in horse power is (1H.P. = 746 watt):
→
An atom with 3 protons and 4 neutrons will have a valency of:
→
The nucleus has:
→
Grit of pear is formed of:
→
Water stored in a dam possesses:
  1. No energy.
  2. Electrical energy.
  3. Kinetic energy.
  4. Potential energy.
→
Two chemical species X and Y combine together to form a product P which contains both X and Y, X + Y → P, X and Y cannot be broken down into simpler substances by simple chemical reactions. Which of the following concerning the species X, Y and Pare correct?
  1. P is a compound.
  2. X and Y are compounds.
  3. X and Y are elements.
  4. P has a fixed composition.
→
9800 joule of energy was spent to raise a mass of 50kg, the mass was raised to a height of:
→
Acceleration due to gravity (due to the shell) at any point inside the shell is:
→
Hydrated $\ce{CuSO4}$ from its aqueous solution:
→
Formula unit mass is used for:
→