Related Questions

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
What is the area of the largest sphere that can be placed inside a cube of volume 216cm3?
A 49π/3
B 36π
C 152π
D 32π
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%
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 154 sq cm?
A 3.5
B 14
C 10.5
D 7
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
A sphere of radius 21 cm is cut into 8 identical parts by 3 cuts (1 cut along each axis). What will be the total surface area (in cm2) of each part?
A 844.5
B 1732.5
C 1039.5
D 1115.6

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