Last Updated On 01-06-2023 - By Jeesha Sara
A heavy ball of mass M is suspended from the ceiling of a car by alight string of mass m (m<<M). When the car is at rest, the speed of transverse waves in the string is 60 ms−1. When the car has acceleration, a the waves-speed increases to 60.5ms−1, the value of a, in terms of gravitational acceleration g, is closest to :
|
a. |
|
b. |
|
|
c. |
|
d. |
|
Question ID - 50054 :- A heavy ball of mass M is suspended from the ceiling of a car by alight string of mass m (m<<M). When the car is at rest, the speed of transverse waves in the string is 60 ms−1. When the car has acceleration, a the waves-speed increases to 60.5ms−1, the value of a, in terms of gravitational acceleration g, is closest to :
a.
b.
c.
d.
A heavy ball of mass M is suspended from the ceiling of a car by alight string of mass m (m<<M). When the car is at rest, the speed of transverse waves in the string is 60 ms−1. When the car has acceleration, a the waves-speed increases to 60.5ms−1, the value of a, in terms of gravitational acceleration g, is closest to :
|
a. |
|
b. |
|
|
c. |
|
d. |
|
=
+
g2+a2+g2+g2
.Next Question :
A sample of radioactive material A, that has an activity of 10m Ci(l Ci=3.7
1010decays/s), has twice the number of nuclei as another sample of a different radioactive maternal B which has an activity of 20mCi. The correct choice for hall-lives of A and B an would then be respectively:
|
a. |
20 days and 5 days |
b. |
20 days and 10 days |
|
c. |
5 days and 10 days |
d. |
10days and 40days |
View Topper Answer
We hope we have given the updated helpful answer / content for your query in an easily accessible format to help you in preparing adequately. We do offer free support materials, 10th maths guide, 10th science guide, 10th tamil guide, 10th social guide, 10th english guide, science 10th guide and also for all the classes books and guide to all the students who sign up for SaraNextGen. Apart from traditional textbook queries, we've got conjointly provided further high order level thinking issues, that are seemingly to be expected in boards and competitive exams. It includes conceptual queries, MCQs, Long and short answer type queries, etc. These Questions are designed to learn each student and academics by providing chapter-wise further issues focusing totally on testing conceptual information with applications. Here, we've got provided a number of the necessary ways in which within which the solutions of all the Questions will profit students of class 1 to 12. If you have any queries, drop a message to us and we will get back to you at the earliest.
