Related Questions

Pick up the correct statement from the following. A rubber ball when strikes a wall rebounds but a lead ball of same mass and velocity when strikes the same wall, falls down
A Rubber and lead balls undergo equal changes in momentum
B Change in momentum suffered by lead ball is less that of rubber ball
C Momentum of rubber ball is less than that of lead ball
D None of these
Each of the following problem has a question and two statements which are labeled 1. and. Use the data given in 1. and 2. to decide whether the statements are sufficient to answer the question.Select one of the following . a.Statements (1) ALONE is sufficient,but (2) ALONE is not sufficient. b.Statements (2) ALONE is sufficient,but (1) ALONE is not sufficient. c. Both statement TOGETHER are sufficient but statement alone is sufficient . A fly crawls around the outside of a circle once.A second fly crawls around the outside of a square once.Which fly travels further ? (1) The diagonal of the square is equal to the diagonal of the circle.(2) The fly crawling around the circle took more time to complete has journey than the fly cawing around the square.
A A
B B
C C
D D
If Bashar can run around a ground four times in 20 minutes and Rahim can run around the same ground three times in 12 minutes, who can run around that ground more times in an hour, and how many times more can he run around ?
A Bashar, three times more
B Rahim , three times more
C They both go around 12 times
D Bashar, eight times more
The latitude which passes through Sikkim also passes through
A Haryana
B Rajasthan
C Uttarakhand
D Himachal Pradesh
When a wave strikes a vertical breakwater in deep water, it is reflected back and on meeting another advancing wave of similar amplitude merges and rises vertically in a wall of water. This phenomenon is called
A Surf
B Clapotis
C Fetch
D Swell
The portion of incident radiation (energy) without heating that surface reflected back from a surface of a body is called:
A Streto
B Ironodo
C Albedo
D Thermedo
Two circular dials of exactly the same size are mounted on a wall side by side in such a way that their perimeters touch at one point. Dial 1, which is on the left , spins clockwise around its center , and dial 2 , which is on the right spins counter clockwise around its center . (Assume that there is no friction at the point of contact between the dials.) Each dial is marked on its perimeter at three points that are at equale distances around the points arked ondial 1 are N, O, and P and the points marked on dial 2 are X, Y, and Z. If points O and Z are just meeting at the point of contact between the dials , and if dial 1 spins at the same speed as dial 2, what is the smallest number of revolutions of each dial that will bring O and Z together again?
A 1
B 2
C 3
D 4
Rittinger number which designates the new surface prduced per unit of mechanical energy absorbed by the material being crushed, depends on the
A State or manner of application of the crushing force
B Ultimate strength of the material
C Elastic constant of the material
D All of the above
Rittinger's number designates the new surface created per unit mechanical energy absorbed by the material being crushed. Larger value of Rittinger's number of a material indicates its
A Easier grindability
B Poor grindability
C High power consumption in grinding
D None of these
what happens while the light ray is in the glass block but before it strikes the mirrored surface?
A The frequency of the wayes increases
B The frequency of the waves decreases
C the wavelength of the waves decreases
D The velocity of the waves decreases

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