A body moves on three quarters of a circle of radius r. The displacement and distance travelled by it are :
Which of the given distance-time graph represents the accelerated motion of a body ?
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A particle moves in a circle of radius 2m and completes one round in 10 seconds. Calculate the linear velocity :
When a force of 5 Newton acts on a body of mass of 2.5 kg that is able to move freely, the body moves with a/an:
A man is at rest in the middle of pond at perfectly smooth ice. He can get himself to the shore by making use of Newton's
After heating common salt and ammonium chloride for a few minutes, we observe the following on the upper part of the inverted funnel:
Mosley’s name is related with the discovery of -
Crystallization is considered better than evaporation for obtaining pure crystal of sugar because during evaporation -
A square is inscribed in a circle of diameter 8 cm. Find the area of the square.
In the given figure and PQ=QR=5, RS=10, ST=3, then the length of PT will be -
If the mean of y and is M, then the mean of y3 and is:
The values of x satisfying equation 71 x 7x–1 = 50, are/ is :
Find the greatest four digit number which when divided by 15, 20 and 28 leaves 2 as a remainder in each case.
If a typist increases her speed by 25%. She can type 12 more pages a day. How many pages does she normally type in a day ?
If the length of a chord of a circle is equal to the radius, then the angle subtended by it at the centre is :
If (a3 b3)2 = (a2 b2)3 , then find the value of is:
The mean of n numbers x1, x2, x3 ,...., xn is M. If x1 is replaced by x´ then, the new mean is :
If the product of two numbers is 21 and their difference is 4, then the ratio of the sum of their cubes to the difference of their cubes is
An equilateral triangle and a regular hexagon have equal perimeters. If the area of the triangle is 12 dm2, then the difference of their areas (in dm2) is :
Enclosed figure is a square ABCD in which points P, Q, R, S are situated in such a way that PQRS is also a square of side 13 cm. If BQ = 5 cm., then the area of square ABCD is :
As shown in the figure diameter of outer circle is 12 cm. Ratio of shaded area of upper semi circle (shown by horizontal lines) to that of the shaded area in the lower semicircle (shown by vertical lines) is :
Factors of x2 ax b are (x – 7) and (x 9) then the value of a and b is -
In the given equilateral ΔABC; D, E and F are the mid points of sides BC, AB and BD respectively. If the area of the ΔBEF is 25 sq.cm then the area of ΔABC is:
Well developed alimentary canal with anus and mouth at opposite ends was first developed in
Vaccine is not available against which of the following diseases ?