1. Two equal arcs of two circles subtend angle of 60° and 75° at the centre. The ratio of the radii of the two circles is





Write Comment

Type in
(Press Ctrl+g to toggle between English and the chosen language)

Comments

  • By: anil on 05 May 2019 01.50 am
    Let the radii of the two circles be $$r_1$$ and $$r_2$$ cm Length of arcs of both circles are equal = $$frac{ heta}{360} imes 2pi r$$ => $$frac{60}{360} imes 2pi r_1$$ = $$frac{75}{360} imes 2pi r_2$$ => $$60r_1=75r_2$$ => $$frac{r_1}{r_2}=frac{75}{60}=frac{5}{4}$$ => Ans - (A)
Tags
Show Similar Question And Answers
QA->The angle subtended the long chord of a simple circular at its centre is equal to:....
QA->The ratio of the age of two sisters is 3:The product of their ages is The ratio of their ages after 5 years will be:....
QA->If the angle of intersection of a curve is φ., then deflection angle will be :....
QA->A liquid will not wet the surface of solid if the angle of contact is which angle?....
QA->The ratio of side force to the slip angle is called:....
MCQ->Two equal arcs of two circles subtend angle of 60° and 75° at the centre. The ratio of the radii of the two circles is....
MCQ->If the arcs of a same length in two circles subtend angles of $$60°$$ and $$75°$$ at their centres, the ratio of their radii is....
MCQ-> Study the following information carefully and answer the questions given below:Eight friends P, Q, R, S, W, X, Y and Z are sitting around a circular table but not necessarily in the same order. Some of them are facing the centre and some others are facing outside (i.e. in a direction opposite to the centre.) Note :(i) Facing the same direction means if one person faces the centre then the other also faces the centre and vice-versa. (ii) Facing the opposite directions means if one person faces the centre then the other faces outside and vice-versa. (iii) Immediate neighbours facing the same direction means if one person faces the centre then the other also faces the centre and vice-versa. (iv) Immediate neighbours facing the opposite directions means if one person faces the centre then the other faces outside and vice-versa. • R sits second to the right of Y. Only two persons sit between R and W. • P sits to the immediate right of W. W faces outside. • Only one person sits between P and Z. Immediate neighbours of P face opposite directions. • Q sits third to the left of Z. Q is not an immediate neighbour of P. • X faces a direction opposite to that of Y. X is an immediate neighbour of neither Y nor P. • Immediate neighbours of S face same direction. P does not face outside. • R and Q face a direction opposite to that of S.Four of the following five are alike in a certain way based on the direction they are facing and so form a group. Which is the one that does not belong to that group?
 ....
MCQ->In a circle, two arcs of unequal length subtend angles in the ratio 5:3. If the smaller angle is 45° then the measure of other angle in degrees.....
MCQ-> Study the following information carefully and answer the questions given below: Eight friends — J, K, L, M, N, 0, P and Q — are sitting around a circular table but not necessarily in the same order. Some of them are facing the centre and some of them are facing outside. (i.e. in a direction opposite to the centre.) Facing the same direction means if one person faces the centre then the other also faces the centre and vice-versa. Facing the opposite direction means if one person faces the centre then the other faces outside and vice-versa. Immediate neighbours facing the same direction means if one neighbour faces the centre then the other also faces the centre and vice-versa. Immediate neighbours facing the opposite direction means if one neighbour faces the centre then the other faces outside and vice-versa. • Only one person sits between K and 0. Q sits third to the right of 0. • M sits to the immediate right of Q. Q faces outside. • L sits second to the left of P. P is not an immediate neighbour of 0. • L faces a direction opposite to that of 0. Immediate neighbours of L face opposite directions. • J sits third to the left of N. J is not an immediate neighbour of P nor K. • M and J face a direction same as that of N.Four of the following five are alike in a certain way based on the directions they are forming and so form a group. Which is the one that does not belong to that group?
 ....
Terms And Service:We do not guarantee the accuracy of available data ..We Provide Information On Public Data.. Please consult an expert before using this data for commercial or personal use
DMCA.com Protection Status Powered By:Omega Web Solutions
© 2002-2017 Omega Education PVT LTD...Privacy | Terms And Conditions