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1. Find the volume of the right circular cone with (ii) radius 3.5 cm, height 12 cm
17
Oct
1. Find the volume of the right circular cone with (ii) radius 3.5 cm, height 12 cm 1. Find the volume of the right circular cone with (ii) radius 3.5 cm height 12 cm October 17, 2020 Category: Chapter 13 - Surface Areas and Volumes , Maths , NCERT Class 9 ,
Small amount of a radioactive substance (half-life = 10 days) is spread inside a room and consequently the level of radiation becomes 50 times the level for normal occupancy
17
Oct
Small amount of a radioactive substance (half-life = 10 days) is spread inside a room and consequently the level of radiation becomes 50 times the level for normal occupancy Small amount of a radioactive substance (half-life = 10 days) is spread inside a room and consequently the level of radiation becomes 50 times the level [...]
1. Find the volume of the right circular cone with (i) radius 6cm, height 7 cm
17
Oct
1. Find the volume of the right circular cone with (i) radius 6cm, height 7 cm 1. Find the volume of the right circular cone with (i) radius 6cm height 7 cm October 17, 2020 Category: Chapter 13 - Surface Areas and Volumes , Maths , NCERT Class 9 ,
A long straight wire carries the current along +ve x direction . Consider four points in space A ( 0, 1 , 0 ) B (0, 1, 1 ) , C ( 1, 0 , 1 ), and D ( 1, 1 10 which of teh pairs will have the same magnitude magnetic field?
17
Oct
A long straight wire carries the current along +ve x direction . Consider four points in space A ( 0, 1 , 0 ) B (0, 1, 1 ) , C ( 1, 0 , 1 ), and D ( 1, 1 10 which of teh pairs will have the same magnitude magnetic field? 0 [...]
8. A patient in a hospital is given soup daily in a cylindrical bowl of diameter 7cm. If the bowl is filled with soup to a height of 4cm, how much soup the hospital has to prepare daily to serve 250 patients?
17
Oct
8. A patient in a hospital is given soup daily in a cylindrical bowl of diameter 7cm. If the bowl is filled with soup to a height of 4cm, how much soup the hospital has to prepare daily to serve 250 patients? 8. A patient in a hospital is given soup daily in a cylindrical [...]
A nucleus of Ux1 has a half-life of 24.1 days. How long a sample of Ux1 take to change to 90% of it to Ux2 ?
17
Oct
A nucleus of Ux1 has a half-life of 24.1 days. How long a sample of Ux1 take to change to 90% of it to Ux2 ? A nucleus of Ux1 has a half-life of 24.1 days. How long a sample of Ux1 take to change to 90% of it to Ux2 ? October 17, 2020 [...]
7. A lead pencil consists of a cylinder of wood with solid cylinder of graphite filled in the interior. The diameter of the pencil is 7 mm and the diameter of the graphite is 1 mm. If the length of the pencil is 14 cm, find the volume of the wood and that of the graphite.
17
Oct
7. A lead pencil consists of a cylinder of wood with solid cylinder of graphite filled in the interior. The diameter of the pencil is 7 mm and the diameter of the graphite is 1 mm. If the length of the pencil is 14 cm, find the volume of the wood and that of the [...]
In the loops shown in figure, all curved sections are either semicircles or quater circles. ALL the loops carry same current . The magnetic fields at the centres have magnitudes B1, B2 , B3 and B4. Then ,
17
Oct
In the loops shown in figure, all curved sections are either semicircles or quater circles. ALL the loops carry same current . The magnetic fields at the centres have magnitudes B1, B2 , B3 and B4. Then , all curved sections are either semicircles or quater circles. ALL the loops carry same current . The [...]
6. The capacity of a closed cylindrical vessel of height 1m is15.4 liters. How many square meters of metal sheet would be needed to make it?
17
Oct
6. The capacity of a closed cylindrical vessel of height 1m is15.4 liters. How many square meters of metal sheet would be needed to make it? 6. The capacity of a closed cylindrical vessel of height 1m is15.4 liters. How many square meters of metal sheet would be needed to make it? October 17, 2020 [...]
5. It costs Rs 2200 to paint the inner curved surface of a cylindrical vessel 10m deep. If the cost of painting is at the rate of Rs 20 per m^2, find (i) inner curved surface area of the vessel (ii) radius of the base (iii) capacity of the vessel
17
Oct
5. It costs Rs 2200 to paint the inner curved surface of a cylindrical vessel 10m deep. If the cost of painting is at the rate of Rs 20 per m^2, find (i) inner curved surface area of the vessel (ii) radius of the base (iii) capacity of the vessel 5. It costs Rs 2200 [...]