25.Which of the following is case of direct variation; *
1 point
(a) If the length of radius is increased the circumference will be increased
(b) If number of students is a hostel are increased then the fixed food provision will last for less days
(c) For fixed duration, more the periods, lesser will be the duration of one period
(d) In case of a cylindrical vessel, lesser the diameter more is the level of water in it.
Answers
Answer:
option(a) is the correct option
Answer:
The case of direct proportional will be
Option a) If the length of radius is increased the circumference will be increased.
Step-by-step explanation:
Direct Proportional is defined as the relationship between two quantities when the ratio of these two are in a constant ratio.
Where the ratio is always equal to the proportionality constant k.
It is also known as direct variation.
It is when two quantities depend on each other directly.
option (b) .If number of students is a hostel are increased then the fixed food provision will last for less days
option (c) For fixed duration, more the periods, lesser will be the duration of one period
option (d) In case of a cylindrical vessel, lesser the diameter more is the level of water in it.
In the above three options, an increase in one quantity leads to decrease in the other quantity.
Hence, these are inversly proportional.