badge image

Enroll For Free Now & Improve Your Performance.

×
User Icon
User Icon
User Icon
User Icon
User Icon

Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.
MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping
Menu
Grade: upto college level

                        

The kinetic energy of a particle depends on the reference frame of the observer. In an exoergic reaction, the total final kinetic energy is greater than the total initial kinetic energy. Which of the following is correct? (A) A reaction that is exoergic in one inertial reference frame is exoergic in all inertial reference frames. (B) It is possible to find a reference frame in which an exoergic reaction could appear to be endoergic. (C) It is possible to find a reference frame in which an exoergic reaction could appear to be elastic. (D) The net change in kinetic energy will have the same value in all inertial reference frames.

5 years ago

Answers : (1)

Navjyot Kalra
askIITians Faculty
654 Points
							The correct option is (D).
If the final kinetic energy is less than the initial kinetic energy, then some of the original kinetic energy is converted into internal energy of the final particles. These reactions are energy absorbing (endoergic) and are analogous to the collisions we have been calling “inelastic”. Therefore option (B) is ruled out.
For elastic collisions, in which the kinetic energy does not change, we must have initial total kinetic energy is equal to the final total kinetic energy. In practice this means that the identities of the colliding bodies do not change and that there are no inertial regroupings of their constituents. Therefore option (C) is ruled out.
In an exoergic reaction, the total final kinetic energy is greater than the total initial kinetic energy, which means that some internal energy of the colliding objects has been changed into kinetic energy. So it is not possible a reaction that is exoergic in one inertial reference frame is exoergic in all inertial frame. Thus option (A) is ruled out. But the total net change in kinetic energy will have the same value in all inertial reference frames. Therefore option (D) is correct.
5 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies


Course Features

  • 101 Video Lectures
  • Revision Notes
  • Previous Year Papers
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Test paper with Video Solution


Course Features

  • 110 Video Lectures
  • Revision Notes
  • Test paper with Video Solution
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Previous Year Exam Questions


Ask Experts

Have any Question? Ask Experts

Post Question

 
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!! Click Here for details