Home
Class 11
PHYSICS
The side of a square is increasing at th...

The side of a square is increasing at the rate of 0.2 cm/s. The rate of increase of perimeter w.r.t time is :

A

0.2 cm/s

B

0.4 cm/s

C

0.6 cm/s

D

0.8 cm/s

Text Solution

Verified by Experts

The correct Answer is:
4
If side =a, then rate of increase of perpendicular w.r.t
time `= 4((da)/(dt)) = 4(0.2) = 0.8` cm/s
Promotional Banner

Topper's Solved these Questions

  • BASIC MATHEMATICS USED IN PHYSICS &VECTORS

    ALLEN |Exercise DEFINITION & TYPES OF VECTOR|5 Videos

  • BASIC MATHEMATICS USED IN PHYSICS &VECTORS

    ALLEN |Exercise ADDITON & SUBTRACTION, MULTIPLICATION & DIVISION OF A VECTOR BY A SCALAR|21 Videos

  • BASIC MATHEMATICS USED IN PHYSICS &VECTORS

    ALLEN |Exercise TRIGONOMETRY|7 Videos

  • CENTRE OF MASS

    ALLEN |Exercise EXERCISE-V B|19 Videos

Similar Questions

Explore conceptually related problems

The side of a square is increasing at ther rate of 0.2 cm//s . The rate of increase of perimeter w.r.t. time is :

The radius of a circle is increasing at the rate of 0.7 cm/s. What is the rate of increase of its circumference ?

The diagonal of a suare is increasing at the rate of 0.5 cm/sec. when the area of a square is 400 cm^(2) , the area is increasing at the rate of ………….

The sides of an equilateral triangle are increasing at the rate of 2cm/sec. The rate at which the area increases, when side is 10 cm is ………..

The area of a triangle is increasing at the rate of 4 cm^(2)//s . Its altitude is increasing at the rate of 2 cm/s. When the length of its altitude is 20 cm and its area is 30 cm^(2) , find the rate of change of its base.

The volume of a sphere is increasing at the rate of pi cm^(2)//sec . The rate at which the radius is increasing is ……….., when the radius is 3 cm.

A cylinder is heated in such a way that its radius always remains twice of its height when the radius is 3 cm, find the rate of increase of its volume. The radius is increased at the rate of 2 cm/s. Also find the rate of increase of its total surface area.

The radius of an air bubble is increasing at the rate of (1)/(2) cm/s. At what rate is the volume of the bubble increasing when the radius is 1 cm ?

The radius of a circle is increasing uniformly at the rate of 3 cm/s. Find the rate at which the area of the circle is increasing when the radius is 10 cm.