AP EAMCET · PHYSICS · Center of Mass Momentum and Collision
Assertion(A) In an elastic collision of two billiard balls, the total KE is conserved during the short time of collision of the balls
(i.e., when they are in contact).Reason(R) Energy spent against friction does not follow the law of conservation of energy.
Codes
- A Both A and R are true and R is a correct explanation for A.
- B Both A and R are true but R is not a correct explanation for A.
- C A is true but R is false.
- D Both A and R is false.
Answer & Solution
Correct Answer
(D) Both A and R is false.
Step-by-step Solution
Detailed explanation
In an elastic collision of two billiard balls, there is deformation in shape of balls momentarily. During the collision potential energy increases due to deformation of balls and kinetic energy decreases. Hence, total energy remains constant but kinetic energy is not conserved.…
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from PHYSICS
- The acceleration of a particle executing SHM isAP EAMCET 2020 Easy
- Time period of a simple pendulum in Air is T. If the pendulum is in water and executes SHM, its time period is \(t\). The value of \(\frac{\mathrm{T}}{t}\) is [density of bob is \(\frac{5000}{3} \mathrm{~kg} \mathrm{~m}^{-3}\) ]AP EAMCET 2024 Medium
- Degenerate electron pressure will not be sufficient to prevent core collapse of 'white dwarf if its mass becomes \(n\) times of solar mass. Value of 11 isAP EAMCET 2005 Hard
- Three designs are proposed for an engine which is to operate between \(500 \mathrm{~K}\) and \(300 \mathrm{~K}\). Design A claims to produce \(150 \mathrm{~J}\) of work per \(1000 \mathrm{~J}\) of heat input, design \(B 450 \mathrm{~J}\) of work per \(1000 \mathrm{~J}\) and design \(C 300 \mathrm{~J}\) of work per \(1000 \mathrm{~J}\). Which of the design would you choose?AP EAMCET 2021 Hard
- If the error in the measurement of the surface area of a sphere is \(1.2 \%\), then the error in the determination of the volume of the sphere isAP EAMCET 2025 Medium
- The ratio of radii of two wires is \(1: 2\) and the density of their materials are in the ratio \(1: 4\). If same tension is applied to both the wires then the ratio of the speed of transverse waves produced in them isAP EAMCET 2023 Medium
More PYQs from AP EAMCET
- \(\left[\mathrm{ML}^2 \mathrm{~T}^{-2} \mathrm{~K}^{-1}\right]\) is the dimensional formula of the physical quantityAP EAMCET 2022 Easy
- \(\int \frac{d x}{\sqrt{\sin ^3 x \cos (x-\alpha)}}=\)AP EAMCET 2024 Easy
- If the matrix \(A=\left[\begin{array}{cccc}1 & 2 & 3 & 0 \\ 2 & 4 & 3 & 2 \\ 3 & 2 & 1 & 3 \\ 6 & 8 & 7 & \alpha\end{array}\right]\) is of rank 3, then \(\alpha\) equals toAP EAMCET 2014 Medium
- If \(\mathrm{a}, \mathrm{b}, \mathrm{c}\) are the intercepts made by the plane passing through the point \((1,2,3)\) parallel to the plane \(3 \mathrm{x}+4 \mathrm{y}-5 \mathrm{z}=0\) on \(\mathrm{X}, \mathrm{Y}, \mathrm{Z}\)-axes respectively then \(3 \mathrm{a}+\mathrm{b}+5 \mathrm{c}=\)AP EAMCET 2022 Medium
- If \(\lim _{x \rightarrow a^{+}} f(x)=p, \lim _{x \rightarrow a^{-}} f(x)=m\) and \(f(a)=k\), then which one of the following is true?AP EAMCET 2025 Medium
- If \(\tanh ^2 x=\tan ^2 \theta\) then \(\cosh 2 x=\)AP EAMCET 2017 Medium