Please select a subject first
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Ultraviolet radiation of 6.2 eV falls on an aluminum surface (work function 4.2 eV). The kinetic energy in joules of the fastest electron emitted is ______
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Define threshold frequency.
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What is cut-off or stopping potential?
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What is mean by the dual nature of matter?
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Calculate the stopping potential when the metal with the work function 0.6 eV is illuminated with the light of 2 eV.
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Two open organ pipes of lengths 49 cm and 50 cm sounded together beat at 7 per second. The speed of sound is ______.
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Determine the motional emf induced in a straight conductor rotating in a uniform magnetic field with constant angular velocity about a transverse axis through one end.
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A block of mass 40 grams is suspended from an ideal spring and set into vertical oscillations. Find the mass to be added on the spring such that the period of oscillation increases by 25%.
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Define the sphere of influence.
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Show that for a given positive ion species in a cyclotron, (i) the radius of their circular path inside a dee is directly proportional to their speed, and (ii) the maximum ion energy achievable is directly proportional to the square of the magnetic induction.
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Show that for a given positive ion species in a cyclotron, (i) the radius of their circular path inside a dee is directly proportional to their speed, and (ii) the maximum ion energy achievable is directly proportional to the square of the magnetic induction.
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Distinguish between an ideal gas and a real gas.
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A circular loop has a resistance of 60 Ω. Two points on the loop, one-quarter of the circumference apart are connected to a 24 V battery, having an internal resistance of 0.75 Ω. The current through the battery is ______.
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Chalk particles cling to the black board due to ______.
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Which type of force is experienced by a moving charge in a magnetic field?
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Which type of force is experienced by a moving charge in a magnetic field?
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State the formula for magnetic potential energy.
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Find the angular acceleration of a particle in circular motion which slows down from 300 r.p.m. to 0 r.p.m. in 20 s.
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A gas in a closed container is heated with 10 J of energy, causing the lid of the container to rise 2 m with 3 N of force. What is the total change in energy of the system?
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State the theories which were proposed to explain nature of light.
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