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As per the recent understanding, light consists of
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Solve Numerical example.
A glass slab of thickness 2.5 cm having refractive index 5/3 is kept on an ink spot. A transparent beaker of very thin bottom, containing water of refractive index 4/3 up to 8 cm, is kept on the glass block. Calculate apparent depth of the ink spot when seen from the outside air.
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The resultant of two forces 10 N and 15 N acting along +x and - x-axes respectively, is
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For two vectors to be equal, they should have the
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The magnitude of scalar product of two unit vectors perpendicular to each other is
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The magnitude of the vector product of two unit vectors making an angle of 60° with each other is
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If `vec"A", vec"B" and vec"C"` are three vectors, then which of the following is not correct?
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The value of acceleration due to gravity is maximum at ________.
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The weight of a particle at the center of the Earth is _______.
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The gravitational potential due to the Earth is minimum at _______.
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Change in dimensions is known as ______.
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The point on the stress-strain curve at which strain begins to increase even without increase in stress is called ________
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Strain energy of a stretched wire is 18 × 10-3 J and strain energy per unit volume of the same wire and same cross-section is 6×10-3 J/m3. Its volume will be _________.
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________ is the property of a material which enables it to resist plastic deformation.
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The ability of a material to resist fracturing when force is applied to it, is called ______.
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Answer in one sentence.
What do you mean by deformation?
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A concave mirror of curvature 40 cm, used for shaving purposes produces image of double size as that of the object. Object distance must be ______.
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Answer the following question.
As per recent development, what is the nature of light? Wave optics and particle nature of light are used to explain which phenomena of light respectively?
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Range of temperature in a clinical thermometer, which measures the temperature of the human body, is
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A glass bottle completely filled with water is kept in the freezer. Why does it crack?
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