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The resistance R = V/I where V = (100 ± 5)V and I = (10 ± 0.2)A. Find the percentage error in

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Find the relative error in Z, if `Z =

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The period of oscillation of a simple pendulum is `T. = 2π sqrt(L/G)` Measured value of L is 20.0 cm known to 1 mm accuracy and time for 100 oscillations of the pendulum is found to be 90 s using a wrist watch of 1 s resolution. What is the accuracy in the determination of g

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Each side of a cube is measured to be 7.203 m. What are the total surface area and the volume of the cube to appropriate significant

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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5.74 g of a substance occupies `1.2 cm^3`. Express its density by keeping the significant figures in

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Let us consider an equation `1/2mv^2=mgh` where m is the mass of the body, v its velocity, g is the acceleration due to gravity and h is the height. Check whether this equation is dimensionally

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Consider a simple pendulum, having a bob attached to a string, that oscillates under the action of the force of gravity. Suppose that the period of oscillation of the simple pendulum depends on its length (l), mass of the bob (m) and acceleration due to gravity (g). Derive the expression for its time period using method of

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Fill in the blanks The volume of a cube of side 1 cm is equal to

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Fill in the blanks The surface area of a solid cylinder of radius 2.0 cm and height 10.0 cm is equal to

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Fill in the blanks A vehicle moving with a speed of 18 km `h^(–1)` covers....m in 1

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Fill in the blanks The relative density of lead is 11.3. Its density is ....g `cm^(–3)` or ....kg

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Fill in the blanks by suitable conversion of units 1 kg `m^2 s^(–2)` = ....g `cm^2

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Fill in the blanks by suitable conversion of units 1 m = .....

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Fill in the blanks by suitable conversion of units 3.0 m `s^(–2)` = .... km

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Fill in the blanks by suitable conversion of units `G = 6.67 × 10^(–11) N m^(2) (kg)^(–2) = .... (cm)^3 s^(–2) g^(–1)`

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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A calorie is a unit of heat or energy and it equals about 4.2 J where 1J = 1 kg `m^2 s^(–2)`. Suppose we employ a system of units in which the unit of mass equals α kg, the unit of length equals β m, the unit of time is γ s. Show that a calorie has a magnitude 4.2 `α^(–1) β^(–2) γ^(2)` in terms of the new

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Explain this statement clearly : “To call a dimensional quantity ‘large’ or ‘small’ is meaningless without specifying a standard for comparison”. In view of this, reframe the following statements wherever necessary : (a) atoms are very small objects (b) a jet plane moves with great

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Explain this statement clearly : “To call a dimensional quantity ‘large’ or ‘small’ is meaningless without specifying a standard for comparison”. In view of this, reframe the following statements wherever necessary : (a) the mass of Jupiter is very large (b) the air inside this room contains a large

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Explain this statement clearly : “To call a dimensional quantity ‘large’ or ‘small’ is meaningless without specifying a standard for comparison”. In view of this, reframe the following statements wherever necessary : (a) the speed of sound is much smaller than the speed of

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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A new unit of length is chosen such that the speed of light in vacuum is unity. What is the distance between the Sun and the Earth in terms of the new unit if light takes 8 min and 20 s to cover this distance

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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