HSC Science (Computer Science) ११ वीं कक्षा - Maharashtra State Board Question Bank Solutions for Physics

Answer the following question.

As we go from one planet to another planet, how will the mass and weight of a body change?

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Derive the relation between three coefficients of thermal expansion.

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State applications of thermal expansion.

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What is thermal stress?

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Give an example of the disadvantages of thermal stress in practical use?

A glass flask has a volume 1 × 10⁻⁴ m³. It is filled with a liquid at 30°C. If the temperature of the system is raised to 100°C, how much of the liquid will overflow? (Coefficient of volume expansion of glass is 1.2 × 10⁻⁵ (°C)⁻¹ while that of the liquid is 75 × 10⁻⁵ (°C)⁻¹).

Solve the following problem.

In olden days, while laying the rails for trains, small gaps used to be left between the rail sections to allow for thermal expansion. Suppose the rails are laid at room temperature 27 °C. If maximum temperature in the region is 45 °C and the length of each rail section is 10 m, what should be the gap left given that α = 1.2 × 10^–5K^–1 for the material of the rail section?

Solve the following problem.

A blacksmith fixes iron ring on the rim of the wooden wheel of a bullock cart. The diameter of the wooden rim and the iron ring are 1.5 m and 1.47 m respectively at room temperature of 27 °C. To what temperature the iron ring should be heated so that it can fit the rim of the wheel? (α_iron = 1.2 × 10^–5K^–1).

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The horizontal and vertical component of magnetic field of Earth are same at someplace on the surface of Earth. The magnetic dip angle at this place will be

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A place where the vertical components of Earth's magnetic field is zero has the angle of dip equal to

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A place where the horizontal component of Earth's magnetic field is zero lies at

What is a geographic meridian?

Answer the following question in detail.

How does the magnetic declination vary with latitude? Where is it minimum?

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Define the Angle of Dip.

What happens to the angle of dip as we move towards magnetic pole from magnetic equator?

Solve the following problem.

A magnet makes an angle of 45° with the horizontal in a plane making an angle of 30° with the magnetic meridian. Find the true value of the dip angle at the place.

[L¹M¹T^-2] is the dimensional formula for ______.

Dimensions of kinetic energy are the same as that of ______.

Answer the following question.

Are there any situations in which we cannot apply Newton’s laws of motion? Is there any alternative for it?

Distinguish between inertial and non-inertial frames of reference.