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Assertion : If the net external force on the body is zero, then its acceleration is zero. Reason : Acceleration does not depend on force. Justify the statements

No, if the net force acting on a body be zero, then the body won’t necessarily be in the rest position. The situation of the net force... View Article

The number of 6 digit numbers that can be formed using the digits 0,1,2,5,7 and 9 which are divisible by 11 and no digit is repeated, is:

If the difference of the sum of alternative digits of a number is divisible by 11, then that number is divisible by 11 completely. In order to... View Article

Convert the ratio 4 :5 to percentage.

To convert fraction to a percent, you just need to multiply the fraction by 100 and reduce it to percent. Here are a few examples that will give... View Article

Assertion: True solution particles show Tyndall effect. Reason: The scattering is directly proportional to size of solution particle. Which of the following statement is right?

The Tyndall effect is the phenomenon in which the particles in a colloid scatter the beams of light that are directed at them. This effect is... View Article

If the nth term of an A.P be (2n – 1), then the sum of its first n terms will be____

An arithmetic sequence or progression is defined as a sequence of numbers in which for every pair of consecutive terms, the second number is... View Article

Find the value of a : b : c : d, if a : b = 2 : 3, b : c = 4 : 5 and c : d = 6 : 7.

Given that a:b = 2:3 and b:c = 4:5. The LCM of 3 and 4 is 12 On multiplying the first ratio by 4 and the second by 3 so that... View Article

In the given figure, aoc = 130°, where o is the centre. find ∠ABC

We know that Angle subtended by a chord on mayor area is half of that subtended on center Hence ∠ADC= 1/2∠AOC ∠ADC= 1/2... View Article

L.C.M. of 2³X3² and 2²X3³

L.C.M. of 23×32 and 22×33 is____ The Least Common Multiple (LCM) is a way of finding the smallest common multiple between any... View Article

If the perimeter of an equilateral triangle is 180 cm. Then its area will be_____

Given Side of the triangle = a Perimeter of the triangle = 3a = 180 cm ∴ a = 60 cm Find out We have to determine the Area... View Article

Plot the following points on a cartesian plane . a(3,4) b ( 5. -1) c ( -3. 0 ) d ( 4, -2)

a cartesian plane is a two-dimensional coordinate plane, which is formed by the intersection of two lines called the x-axis and y-axis. In... View Article

In figure lines XY and MN intersect at O. If ∠POY = 90° and a : b = 2 : 3, find c.

We know that the sum of linear pair is always equal to 180° So, ∠POY +a +b = 180° Putting the value of ∠POY =... View Article

Let A = {a, b, c, d, e} and B = {a, b, c, d, e, f, g, h}. Find A ∪ B.

The union of two sets X and Y is equal to the set of elements that are present in set X, in set Y, or in both the sets X and Y. This operation... View Article

A triangle has side lengths of 3cm, 4cm, and, 6cm. Is it a right triangle explain?

A right-angled triangle is a type of triangle that has one of its angles equal to 90 degrees. The other two angles sum up to 90 degrees. The... View Article

What is the HCFof 30 and 42?

The Highest Common Factor (HCF) of two or more numbers is the greatest of all their common factors. Therefore, it is also called the greatest... View Article

LCM of 6,72 and 120 is ______________.

Given The numbers 6, 72 and 120 Find out We have to determine the LCM of 6, 7 and 120 Solution Let us determine the LCM by prime... View Article

A metal ball falls from a height of 32m on a steel plate. If the coefficient of restitution is 0.5 to what height will the ball rise after second bounce?

From Torricelli’s Law we know that V = √2gh V1 / V2 = 1/2 V2 = V1/2 = 12.6 V2 / 2g = h = 8m... View Article

Let A = {1, 2, 3, … , 14}. Define a relation R from A to A by R = {(x, y): 3x – y = 0, where x, y ∈ A}. Determine its domain

Domain definitionThe set of all possible values which qualify as inputs to a function is known as the domain of the function. In other words the... View Article

Find the value of ‘k’, for which the points are collinear A(2,3),B(4,k) and C(6,−3)

Given Points A(2,3),B(4,k) and C(6,−3) are collinear. Find out We have to determine the value of k... View Article

A particle of mass m is initially at rest at the origin. It is subjected to a force and starts moving along the x-axis. Its kinetic energy K changes with time as dK/dt = γt, where γ is a positive constant of appropriate dimensions. Which of the following statements is (are) true ? (A) The force applied on the particle is constant (B) The speed of the particle is proportional to time (C) The distance of the particle from the origin increses linerarly with time (D) The force is conservative

The correct options are A The force applied on the particle is constantB The speed of the particle is proportional to... View Article

If the distance between a point source of light and a screen is doubled, then the intensity will be

if the distance between a point source of light and a screen is doubled, then the intensity will be one fourth Intensity, I ∝... View Article

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