Choose The Natural Magnet Options 1- Iron 2- Alnico 3- Magnetite 4- Nickel

Academic Physics NCERT Class 6

Magnetite

is an example of the natural magnet.

Tutorialspoint

Simply Easy Learning

Updated on: 10-Oct-2022

26 Views

A Magnet Is Used In Options 1- Bulb 2- Cell 3- Compass 4- All Of These
Sum of the series 1 + (1+2) + (1+2+3) + (1+2+3+4) + ... + (1+2+3+4+...+n) in C++
Choose the correct answer from the given four options in the following questions:If one of the zeroes of the quadratic polynomial \( (k-1) x^{2}+k x+1 \) is \( -3 \), then the value of \( k \) is(A) \( \frac{4}{3} \)(B) \( \frac{-4}{3} \)(C) \( \frac{2}{3} \)(D) \( \frac{-2}{3} \)
Observe the following pattern$1=\frac{1}{2}\{1 \times(1+1)\}$$1+2=\frac{1}{2}\{2 \times(2+1)\}$$1+2+3=\frac{1}{2}\{3 \times(3+1)\}$$1+2+3+4=\frac{1}{2}\{4 \times(4+1)\}$and find the values of each of the following:(i) $1 + 2 + 3 + 4 + 5 +….. + 50$(ii)$31 + 32 +… + 50$
Choose the correct answer from the given four options in the following questions:Which of the following equations has no real roots?(A) \( x^{2}-4 x+3 \sqrt{2}=0 \)(B) \( x^{2}+4 x-3 \sqrt{2}=0 \)(C) \( x^{2}-4 x-3 \sqrt{2}=0 \)(D) \( 3 x^{2}+4 \sqrt{3} x+4=0 \)
Sum of the Series 1/(1*2) + 1/(2*3) + 1/(3*4) + 1/(4*5) + ... in C++\n
Choose the correct answer from the given four options in the following questions:Which of the following is not a quadratic equation?(A) \( 2(x-1)^{2}=4 x^{2}-2 x+1 \)(B) \( 2 x-x^{2}=x^{2}+5 \)(C) \( (\sqrt{2} x+\sqrt{3})^{2}+x^{2}=3 x^{2}-5 x \)(D) \( \left(x^{2}+2 x\right)^{2}=x^{4}+3+4 x^{3} \)
Following data gives the number of children in 41 families:$1, 2, 6, 5, 1, 5, 1, 3, 2, 6, 2, 3, 4, 2, 0, 0, 4, 4, 3, 2, 2, 0, 0, 1, 2, 2, 4, 3, 2, 1, 0, 5, 1, 2, 4, 3, 4, 1, 6, 2, 2.$Represent it in the form of a frequency distribution.
Choose the correct answer from the given four options in the following questions:Which of the following is a quadratic equation?(A) \( x^{2}+2 x+1=(4-x)^{2}+3 \)(B) \( -2 x^{2}=(5-x)\left(2 x-\frac{2}{5}\right) \)(C) \( (k+1) x^{2}+\frac{3}{2} x=7 \), where \( k=-1 \)(D) \( x^{3}-x^{2}=(x-1)^{3} \)
Simplify:\( 5 \frac{1}{4} \p 2 \frac{1}{3}-4 \frac{2}{3} \p 5 \frac{1}{3} \times 3 \frac{1}{2} \)
Observe the following pattern\( 1^{2}=\frac{1}{6}[1 \times(1+1) \times(2 \times 1)+1)] \)\( 1^{2}+2^{2}=\frac{1}{6}[2 \times(2+1) \times(2 \times 2)+1)] \)\( 1^{2}+2^{2}+3^{2}=\frac{1}{6}[3 \times(3+1) \times(2 \times 3)+1)] \)\( 1^{2}+2^{2}+3^{2}+4^{2}=\frac{1}{6}[4 \times(4+1) \times(2 \times 4)+1)] \)and find the values of each of the following:(i) $1^2 + 2^2 + 3^2 + 4^2 +…………… + 10^2$(ii)$5^2 + 6^2 + 7^2 + 8^2 + 9^2 + 10^2 + 11^2 + 12^2$
Observe the following pattern\( (1 \times 2)+(2 \times 3)=\frac{2 \times 3 \times 4}{3} \)\( (1 \times 2)+(2 \times 3)+(3 \times 4)=\frac{3 \times 4 \times 5}{3} \)\( (1 \times 2)+(2 \times 3)+(3 \times 4)+(4 \times 5)=\frac{4 \times 5 \times 6}{3} \)and find the value of\( (1 \times 2)+(2 \times 3)+(3 \times 4)+(4 \times 5)+(5 \times 6) \)
Program to find the sum of series 1*2*3 + 2*3*4+ 3*4*5 + . . . + n*(n+1)*(n+2)
Add: $4 \frac{1}{2}+3 \frac{2}{4}$.
\( 3+\frac{-1}{2}+\frac{-3}{4} \)

Kickstart Your Career

Get certified by completing the course

Get Started

Advertisements