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The breaking stress for a substance is 10^6 N/m^2. What length of the wire of this substance should be suspended verticaly so that the wire breaks under its own weight? (Given: density of material of the wire = 4 × 10^3 kg/m^3 and g = 10 m/s^2 )
09
Oct
The breaking stress for a substance is 10^6 N/m^2. What length of the wire of this substance should be suspended verticaly so that the wire breaks under its own weight? (Given: density of material of the wire = 4 × 10^3 kg/m^3 and g = 10 m/s^2 ) then its new length becomes Young's modulus [...]
Two converging lenses of focal lengths f1 = 10 cm and f2 = 20 cm are placed at some separation. A parallel beam of light is incident on first lens. Then,
09
Oct
Two converging lenses of focal lengths f1 = 10 cm and f2 = 20 cm are placed at some separation. A parallel beam of light is incident on first lens. Then, Two converging lenses of focal lengths f1 = 10 cm and f2 = 20 cm are placed at some separation. A parallel beam of [...]
When a real object is placed 25 cm from a lens, a real image is formed. Mark the correct statements from the following
09
Oct
When a real object is placed 25 cm from a lens, a real image is formed. Mark the correct statements from the following a real image is formed. Mark the correct statement(s) from the following. When a real object is placed 25 cm from a lens October 9, 2020 Category: Uncategorised (JEE Advanced Physics by [...]
2.Construct an equilateral triangle of side 5.5 cm.
09
Oct
2.Construct an equilateral triangle of side 5.5 cm. 2.Construct an equilateral triangle of side 5.5 cm. October 9, 2020 Category: Chapter 10 - Practical Geometry , Maths , NCERT Class 7 ,
Two wires of the same material have lengths in the ratio 1:2 and their radii are in the ratio 1:2–√ If they are stretched by applying equal forces, the increase in their lengths will be in the ratio
09
Oct
Two wires of the same material have lengths in the ratio 1:2 and their radii are in the ratio 1:2–√ If they are stretched by applying equal forces, the increase in their lengths will be in the ratio the increase in their lengths will be in the ratio Two wires of the same material have [...]
An image of a bright square is obtained on a screen with the aid of a convergent lens. The distance between the square and the lens is 40 cm. The area of the image is nine times
09
Oct
An image of a bright square is obtained on a screen with the aid of a convergent lens. The distance between the square and the lens is 40 cm. The area of the image is nine times An image of a bright square is obtained on a screen with the aid of a convergent lens. [...]
1.Construct ΔXYZ in which XY = 4.5 cm, YZ = 5 cm and ZX = 6 cm.
09
Oct
1.Construct ΔXYZ in which XY = 4.5 cm, YZ = 5 cm and ZX = 6 cm. 1.Construct ΔXYZ in which XY = 4.5 cm YZ = 5 cm and ZX = 6 cm. October 9, 2020 Category: Chapter 10 - Practical Geometry , Maths , NCERT Class 7 ,
3.Let l be a line and P be a point not on l. Through P, draw a line m parallel to l. Now join P to any point Q on l. Choose any other point R on m. Through R, draw a line parallel to PQ. Let this meet l at S. What shape do the two sets of parallel lines enclose?
09
Oct
3.Let l be a line and P be a point not on l. Through P, draw a line m parallel to l. Now join P to any point Q on l. Choose any other point R on m. Through R, draw a line parallel to PQ. Let this meet l at S. What shape do [...]
2.Draw a line l. Draw a perpendicular to l at any point on l. On this perpendicular choose a point X, 4 cm away from l. Through X, draw a line m parallel to l.
09
Oct
2.Draw a line l. Draw a perpendicular to l at any point on l. On this perpendicular choose a point X, 4 cm away from l. Through X, draw a line m parallel to l. 2.Draw a line l. Draw a perpendicular to l at any point on l. On this perpendicular choose a point [...]
When a certain weight is suspended from a long uniform wire, its length increases by 1cm. If the same weight is suspended from another we of the same material and length but having a diameter half of the first one, the increases in length will be
09
Oct
When a certain weight is suspended from a long uniform wire, its length increases by 1cm. If the same weight is suspended from another we of the same material and length but having a diameter half of the first one, the increases in length will be its length increases by 1cm. If the same weight [...]