Related Questions

The height of a cone is 24 cm and the area of the base is 154 cm2. What is the curved surface area (in cm2) of the cone?
A 484
B 550
C 525
D 515
In a shell and tube heat exchanger for a given heat transfer surface area, smaller diameter tubes are favoured as compared to larger diameter ones ; because the smaller diameter tubes
A Are easier to clean
B Are less prone to fouling
C Can be fitted into a smaller shell diameter hence the cost of the heat exchanger would be less
D None of these
A solid sphere of diameter 17.5 cm is cut into two equal halves. What will be the increase (in cm2) in the total surface area?
A 289
B 361.5
C 481.25
D 962.5
What is the diameter (in cm) of a sphere of surface area 6.16 sq cm?
A 1.4
B 0.7
C 2.8
D 2.1
Equivalent diameter of a particle is the diameter of the sphere having the same
A Ratio of surface to volume as the actual volume
B Ratio of volume to surface as the particle
C Volume as the particle
D None of these
such matters are outside the sphere of my responsibility.The word sphere in this sentence can be replaced (without altering the meaning by:
A area
B domain
C range
D any of a, b or c
A man standing at the top of a tower has two spheres A and B. He drops sphere A downwards and throws sphere B horizontally at the same time. Which of the following is correct ?
A Both the spheres will reach the ground simultaneously.
B A will reach the ground first.
C B will reach the ground first.
D The question is incomplete because the masses of the spheres are not given.
A hollow sphere and a solid sphere of the same material and equal radii are heated to the same temperature. In this case,
A The cooling rate will be the same for the two spheres and hence the two spheres will have equal temperatures at any instant
B Both the spheres will emit equal amount of radiation per unit time in the beginning
C Both will absorb equal amount of radiation from the surrounding in the beginning
D Both B & C
IF the radiud of a sphere is increaded by 10% , how much will the surface area be increaded in ercentage?
A 21%
B 10%
C 18%
D 20%
If the radius of a sphere is doubled, its surface area is increased by------.
A 300%
B 100%
C 50%
D 150%

Next steps