There are 27 students take Chemistry, 22 take Physics, 7 take both then the ratio between takes only Physics and Chemistry is
A) 4 : 5
B) 3 : 4
C) 4 : 3
D) 5 : 4
1 Answers
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Two particles of masses in the ratio 2:1 are moving in circular paths of radii in the ratio 3:2 with time period in the ratio 2:3 .The ratio of their
Correct Answer - B `(F_(1))/(F_(2))=(m_(1))/(m_(2))xx(r_(1))/(r_(2))xx(T_(2)^(2))/(T_(1)^(2))=(2)/(1)xx(3)/(2)xx(9)/(4)` `=27:4`.
2 Answers 3 views
Assertion : Resonance is exhibited by a circuit only if both L and C are present in the circuit. Reason : Only then the voltage across L and C cancel
Correct Answer - A The resonance phenomenon is exhibited by a circuit only if both L and C are present in the circuit. Only then the voltages across L and C...
2 Answers 1 views
The radii of the base of cylinder and a cone are in the ratio of 3 : 4 and their heights are in the ratio of 2 : 3, then the ratio
Correct option is: A) 9 : 8 Let radii of cylinder and cone are \(r_1 \)and \(r_2 \) respectively. Also let heights of cylinder and cone are \(h_1 \)and \(h_2\) respectively. \(\therefore\) Volume of cylinder \(V_1 =...
2 Answers 1 views
The radii of the base of cylinder and a cone are in the ratio of 3 : 4 and their heights are in the ratio of 2 : 3, then the ratio
2 Answers
1 views
90 students take Mathematics, 72 take Science in a class of 120 students.
Correct option is C) 52
2 Answers 5 views
In a school of 214 students 134 takes tea, 134 takes coffee. Then how many takes only tea or coffee
Correct option is D) 160
2 Answers 4 views
In a class of 26 students, 8 takes tea but not coffee and 16 take tea then number of students who take coffee but not tea is
Correct option is A) 10
2 Answers 1 views
Calculate the Materials Consurned Ratio, Employees Benefit Expenses Ratio, Admninistrative Expenses Ratio, Selling and Distribution Expenses Ratio and
[Meterials Consumed Ratio = 50 % , Employees Benefit Expenses Ratio= 15.63 % Administration Expenses Ratio= 14.25 % , Selling and Distribution Expenses Ratio =3.25 %,Other Expenses Ratio = 10...
2 Answers 1 views
In a college, 30% students fail in physics, 25% fail in Mathematics and 10% in both. One student is choosen at random. The probability that she fails
Here, `P((ph))=30/300=3/10,P((M))=25/100=1/4` and `P((McapPh))=10/100=1/10` `therefore P((Ph)/M)=(P(PhcapM))/(P(M))=(1//10)/(1//4)=2/5`
2 Answers 1 views
Which of the above-mentioned statements/s is/are TRUE? A. only 1 B. only 2 C. only 3 and 4 D. only 1, 2 and 4
D. only 1, 2 and 4
2 Answers 1 views