The time shown in mirror placed in front of clock at 6 :20 is___
Figure 1 is the clock that displays time 5:40. On its left side, a mirror is placed and figure is the... View Article
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Name a molecule with zero dipole moment
A dipole moment arises in any system in which there is a separation of charge. They can, therefore, arise in... View Article
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... 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:
Divisibility Rules for 11 If the difference of the sum of alternative digits of a number is divisible by 11,... 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.... 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... 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,... 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... 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=... View Article
L.C.M. of 23X32 and 22X33
L.C.M. of 23×32 and 22×33 is____ Solution The Least Common Multiple (LCM) is a way of finding the smallest common... 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... 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... View Article
In figure lines XY and MN intersect at O. If ∠POY = 90° and a : b = 2 : 3, find c.
Solution We know that the sum of linear pair is always equal to 180° So, ∠POY +a +b = 180°... View Article
Let A = {a, b, c, d, e} and B = {a, b, c, d, e, f, g, h}. Find A ∪ B.
Union of Sets The union of two sets X and Y is equal to the set of elements that are... 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... 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... 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... 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 /... 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... 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 Solution Area of triangle having vertices A,... View Article
