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A concave mirror of 20 cm focal length is immersed into water. What is its new focal length?
The focal length of a concave mirror does not change when immersed in water because it depends only on the mirror's geometry and not the surrounding medium. Thus, its focal length remains 20 cm. For more visit here: https://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-9/
The focal length of a concave mirror does not change when immersed in water because it depends only on the mirror’s geometry and not the surrounding medium. Thus, its focal length remains 20 cm.
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What is the value of Rydberg constant for hydrogen?
The Rydberg constant for hydrogen is approximately 1.097 × 10⁷ m⁻¹. It represents the limiting value of the highest wavenumber (inverse wavelength) of any photon emitted in the hydrogen atom's spectral series. For more visit here: https://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapteRead more
The Rydberg constant for hydrogen is approximately 1.097 × 10⁷ m⁻¹. It represents the limiting value of the highest wavenumber (inverse wavelength) of any photon emitted in the hydrogen atom’s spectral series.
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What do you mean by the term impact parameter?
The impact parameter is the perpendicular distance between the initial trajectory of a particle (or object) and the center of the force field it interacts with. It helps describe scattering processes, indicating how closely a particle approaches the target's center. For more visit here: https://www.Read more
The impact parameter is the perpendicular distance between the initial trajectory of a particle (or object) and the center of the force field it interacts with. It helps describe scattering processes, indicating how closely a particle approaches the target’s center.
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A steel rod has a radius of 10 mm and a length of 1.0 m. A force stretches it along its length and produce a strain of 0.16%. Young’s modulus of the steel is 2.0 x 10¹¹ Nm⁻². What is the magnitude of the force stretching the rod?
The expression of stress, strain, and Young's modulus is as follows: Stress = Y × Strain where, - Y = 2.0 × 10¹¹ N/m² - Strain = 0.16% = 0.0016 Stress can also be defined as follows: Stress = Force / Area Cross-sectional area of the rod A = πr² = π × (10 × 10⁻³)² = π × 10⁻⁴ m² Put it into the equatiRead more
The expression of stress, strain, and Young’s modulus is as follows:
Stress = Y × Strain
where,
– Y = 2.0 × 10¹¹ N/m²
– Strain = 0.16% = 0.0016
Stress can also be defined as follows:
Stress = Force / Area
Cross-sectional area of the rod
A = πr² = π × (10 × 10⁻³)² = π × 10⁻⁴ m²
Put it into the equation for stress:
Y × Strain = Force / Area
Force =
Force = Y × Strain × A
Put the values:
Force = (2.0 × 10¹¹) × (0.0016) × (π × 10⁻⁴)
Force = 100.5 × 10³ N ≈ 100 kN
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A cube is subjected to a uniform volume compression. If the side of the cube decreases by 2% the bulk strain is
The bulk strain can be described as the fractional alteration in the volume of a body. In this case of uniform compression for the cube, this is computed with: Bulk Strain = 3 × Linear Strain Since the length of the cube has been compressed by 2%, then this gives a value of: Linear Strain = ΔL / L =Read more
The bulk strain can be described as the fractional alteration in the volume of a body. In this case of uniform compression for the cube, this is computed with:
Bulk Strain = 3 × Linear Strain
Since the length of the cube has been compressed by 2%, then this gives a value of:
Linear Strain = ΔL / L = 0.02
This therefore, implies that,
Bulk Strain = 3 × 0.02 = 0.06
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