Home/Class 7/Maths/

Question and Answer

Question
MathsClass 7

Which of the drawings (a) to (d) show : (i) \({2}\times\frac{{1}}{{5}}\) (ii) \({2}\times\frac{{1}}{{2}}\) (iii) \({3}\times\frac{{2}}{{3}}\) (iv) \({3}\times\frac{{1}}{{4}}\)

Answer

Drawing \({\left({a}\right)}\) shows \({3}\) circles with two third of them shaded. So, it maps to ,

(iii) \({3}\times\frac{{2}}{{3}}\).



Drawing \({\left({b}\right)}\) shows \({2}\) squares with half of them shaded. So, it maps to ,

(ii) \({2}\times\frac{{1}}{{2}}\).



Drawing \({\left({c}\right)}\) shows \({3}\) squares with one fourth of them shaded. So, it maps to ,

(iv) \({3}\times\frac{{1}}{{4}}\).



Drawing \({\left({d}\right)}\) shows \({2}\) circles with one fifth of them shaded. So, it maps to ,

(i) \({2}\times\frac{{1}}{{5}}\).

To Keep Reading This Answer, Download the App
4.6
star pngstar pngstar pngstar pngstar png
Review from Google Play
To Keep Reading This Answer, Download the App
4.6
star pngstar pngstar pngstar pngstar png
Review from Google Play
Correct12
Incorrect0
Still Have Question?
Ask Your QuestionFind More Answer
Watch More Related Solutions
If the tension in the cable supporting an elevator is equal to the weight of the elevator, the elevator may be
(A) going up with increasing speed
(B) going down with incresing speed
(C) going up with uniform speed
(D) going down with uniform speed
If the tension in the cable supporting an elevator is equal to the weight of the elevator, the elevator may be
(A) going up with increasing speed
(B) going down with incresing speed
(C) going up with uniform speed
(D) going down with uniform speed
Physics|Class 11
A tuning fork A frequency 384Hz gives 6 beats in 2 seconds when sounded with another tuning fork B. What could be the frequency of B?
A tuning fork A frequency 384Hz gives 6 beats in 2 seconds when sounded with another tuning fork B. What could be the frequency of B?
Physics|Class 11
A cylindrical metal tube has a length of 50 cm and is open at both ends. Find the frequencies between 1000 Hz and 2000 Hz at which the air column in the tube can resonate. Speed of sound in air is \({340}{m}{s}^{{-{{1}}}}\).
A cylindrical metal tube has a length of 50 cm and is open at both ends. Find the frequencies between 1000 Hz and 2000 Hz at which the air column in the tube can resonate. Speed of sound in air is \({340}{m}{s}^{{-{{1}}}}\).
Physics|Class 11
\({C}{H}_{{{3}}}-{C}{H}={C}{H}_{{{2}}}{\overset{{{C}{l}_{{{2}}}/{H}_{{{2}}}{O}}}{\to}}\)
The correct product is
(A) \({C}{H}_{{{3}}}-{\underset{{{O}{H}}}{{\underset{{{\mid}}}{{{C}{H}}}}}}-{\underset{{{O}{H}}}{{\underset{{{\mid}}}{{{C}{H}_{{{2}}}}}}}}\)
(B) \({C}{H}_{{{3}}}-{\overset{{{O}}}{{\overset{{{\mid}{\mid}}}{{{C}}}}}}-{C}{H}_{{{3}}}\)
(C) \({C}{H}_{{{3}}}-{\underset{{{O}{H}}}{{\underset{{{\mid}}}{{{C}{H}}}}}}-{\underset{{{C}{l}}}{{\underset{{{\mid}}}{{{C}{H}_{{{2}}}}}}}}\)
(D) \({C}{H}_{{{3}}}-{\underset{{{C}{l}}}{{\underset{{{\mid}}}{{{C}{H}}}}}}-{\underset{{{O}{H}}}{{\underset{{{\mid}}}{{{C}{H}_{{{2}}}}}}}}\)
\({C}{H}_{{{3}}}-{C}{H}={C}{H}_{{{2}}}{\overset{{{C}{l}_{{{2}}}/{H}_{{{2}}}{O}}}{\to}}\)
The correct product is
(A) \({C}{H}_{{{3}}}-{\underset{{{O}{H}}}{{\underset{{{\mid}}}{{{C}{H}}}}}}-{\underset{{{O}{H}}}{{\underset{{{\mid}}}{{{C}{H}_{{{2}}}}}}}}\)
(B) \({C}{H}_{{{3}}}-{\overset{{{O}}}{{\overset{{{\mid}{\mid}}}{{{C}}}}}}-{C}{H}_{{{3}}}\)
(C) \({C}{H}_{{{3}}}-{\underset{{{O}{H}}}{{\underset{{{\mid}}}{{{C}{H}}}}}}-{\underset{{{C}{l}}}{{\underset{{{\mid}}}{{{C}{H}_{{{2}}}}}}}}\)
(D) \({C}{H}_{{{3}}}-{\underset{{{C}{l}}}{{\underset{{{\mid}}}{{{C}{H}}}}}}-{\underset{{{O}{H}}}{{\underset{{{\mid}}}{{{C}{H}_{{{2}}}}}}}}\)
Chemistry|Class 12
A capacitor is connected to a 12 V battery through a resistance of \({\left({10}\Omega\right)}\).It is found that the potential difference across the capacitor rises to 4.0 V in 1(mu)s. find the capacitance of the capacitor.
A capacitor is connected to a 12 V battery through a resistance of \({\left({10}\Omega\right)}\).It is found that the potential difference across the capacitor rises to 4.0 V in 1(mu)s. find the capacitance of the capacitor.
Physics|Class 12
A moving coil galvanometer has 100 turns and each turn has an area \({2.0}{c}{m}^{{2}}\). The magnetic field produced by the magnet is \({0.01}{T}\). The deflection in the coil is \({0.05}\) radian when a current of \({10}{m}{A}\) is passed through it. Find the torsional constant of the suspension wire.
A moving coil galvanometer has 100 turns and each turn has an area \({2.0}{c}{m}^{{2}}\). The magnetic field produced by the magnet is \({0.01}{T}\). The deflection in the coil is \({0.05}\) radian when a current of \({10}{m}{A}\) is passed through it. Find the torsional constant of the suspension wire.
Physics|Class 12
If \({y}={a}{\cos{{\left({\log{{x}}}\right)}}}+{\sin{{\left({\log{{x}}}\right)}}},\)
prove that
\(\frac{{{x}^{{2}}{d}^{{2}}}}{{{\left.{d}{x}\right.}^{{2}}}}+\ {x}\frac{{{\left.{d}{y}\right.}}}{{{\left.{d}{x}\right.}}}+{y}={0}\)
If \({y}={a}{\cos{{\left({\log{{x}}}\right)}}}+{\sin{{\left({\log{{x}}}\right)}}},\)
prove that
\(\frac{{{x}^{{2}}{d}^{{2}}}}{{{\left.{d}{x}\right.}^{{2}}}}+\ {x}\frac{{{\left.{d}{y}\right.}}}{{{\left.{d}{x}\right.}}}+{y}={0}\)
Math|Class 12
The vernier constant of a vernier callipers is \({0.001}{c}{m}\). If \({49}\) main scale divisions coincide with \({50}\) vernier scale devisions, then the value of \({1}\) main scale divisions is .
(A) 0.1 mm
(B) 0.5 mm
(C) 0.4 mm
(D) 1 mm
The vernier constant of a vernier callipers is \({0.001}{c}{m}\). If \({49}\) main scale divisions coincide with \({50}\) vernier scale devisions, then the value of \({1}\) main scale divisions is .
(A) 0.1 mm
(B) 0.5 mm
(C) 0.4 mm
(D) 1 mm
Physics|Class 11
A varying horizental force \({F}=\) at act on a block of mass \({m}\) kept on a smooth horizontal surface An identical block is kept on the first block.The coefficient of friction between the blocks is \(\mu\) . The time after which the relative sliding between the blocks prevails is
(A) \(\frac{{{2}{m}{g}}}{{{a}}}\)
(B) \(\frac{{{2}\mu{m}{g}}}{{{a}}}\)
(C) \(\frac{{\mu{m}{g}}}{{{a}}}\)
(D) \({2}\mu{m}{g}{a}\)
A varying horizental force \({F}=\) at act on a block of mass \({m}\) kept on a smooth horizontal surface An identical block is kept on the first block.The coefficient of friction between the blocks is \(\mu\) . The time after which the relative sliding between the blocks prevails is
(A) \(\frac{{{2}{m}{g}}}{{{a}}}\)
(B) \(\frac{{{2}\mu{m}{g}}}{{{a}}}\)
(C) \(\frac{{\mu{m}{g}}}{{{a}}}\)
(D) \({2}\mu{m}{g}{a}\)
Physics|Class 11
A particle of mass 'm' is projected from the surface of earth with velocity\(\upsilon={2}\upsilon_{{{e}}}\), where \(\upsilon_{{{e}}}\) is the value of escape velocity from the surface of earth . Find velocity of the particle on reaching to interstellar space (at infinity) in terms of \(\upsilon_{{{e}}}\).
A particle of mass 'm' is projected from the surface of earth with velocity\(\upsilon={2}\upsilon_{{{e}}}\), where \(\upsilon_{{{e}}}\) is the value of escape velocity from the surface of earth . Find velocity of the particle on reaching to interstellar space (at infinity) in terms of \(\upsilon_{{{e}}}\).
Physics|Class 11

Load More

More Solution Recommended For You
NCERT Maths for Class 6
NCERT Physics for Class 6
NCERT Chemistry for Class 6
NCERT Biology for Class 6
NCERT Maths for Class 7
NCERT Physics for Class 7
NCERT Chemistry for Class 7
NCERT Biology for Class 7
NCERT Maths for Class 8
NCERT Physics for Class 8
NCERT Chemistry for Class 8
NCERT Biology for Class 8
Previous
Next