XI Physics | 2018 Solved Numericals | Talha's Physics Academy

Описание: This Video contains solution of the following Numericals.(In Descending Order)
2(xv) A microscope has an objective of 12mm focal length and eye piece of 25 mm focal length. What is the distance between the lenses? What is the magnifying power if the object is in sharp focus when it is 15 mm from the objective?
2(xiii) A balloon tied up with a wooden piece is moving upward with velocity of 15 m/s.At a height of 300 m above the ground, the wooden piece is detached from the balloon. How much time will it take to reach the ground?
2(xi) A man weighing 60 kg is standing on the floor of an elevator. Calculate the force exerted by the man when the elevator is ascending at a rate of 2 m/s2.
2(x) A standing wave is established in a 135 cm long string fixed at both ends. The string vibrates in four loops when driven at 130 Hz. Determine the fundamental frequency.
2(ix) A crane lifts a load of 6000 N through a vertical distance of 15 m in 30 s. What is the potential energy at the highest point of this operation?
2(vi) An astronomical telescope has a length of 105 cm and its magnification is 6. Determine the power of objective and eye piece?
2(vi) A 15 kg block is suspended by a spring of spring constant 5 x 103 N/m. Calculate the frequency of vibration of the block displaced from its equilibrium position when it is released.
2(v) A brick of mass 2 kg is dropped from a height of 5m above the ground. What is its velocity at a height of 3m above the ground?
2(ii) Calculate the angle of projection for which the maximum height of projectile is equal to 1/3 of its horizontal range.
2(i) If the vector A ⃗=ai ̂+j ̂-2k ̂ and B ⃗=i ̂+aj ̂+k ̂ are perpendicular to each other then find the value ‘a’.

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XI Lectures :   • XI Physics Lectures Old Book  

XI Solved Numericals:   • XI OLD BOOK Solved Numericals Sindh Board ...  

XII Lectures:    • XII Physics Lectures Old Book  

XII Solved Numericals:   • Плейлист  
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