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Define the terms threshold frequency and stopping potential in relation to the phenomenon of photoelectric effect. How is the photoelectric current affected on enhancing the
(i) frequency
(ii) intensity of the incident radiations and why?
9.8-g lead bullet with a muzzle velocity of 3.90 x 10 2 m/s is stopped by a wooden block. What is the change in temperature of the bullet if one-fourth of its original kinetic
the factors which decide the broad area of scientific activity ?
Q. Define: optic axis of a crystal. In a double refracting crystal there is a particular direction in which both the rays travel with same velocity. This direction is called a
Describe a) Potential difference between two points V, B) Intensity of electric field E. Derive the relation between them.
This depends on the arrangement of a beam or column. for a simply supported beam with a point load in the centre of the beam Mmax = WL/4 and will occur at centre span W is the lo
Concurrent angular acceleration means angular acceleration at a particular dot instant at t = t 1 mathematically it is given as,
A thin convex lens of focal length 0.1m and a thin concave lens of focal length 0.1m are placed co-axially in contact. What is the total power of the combination?
A current of 12A flows in the element of an electric fire of resistance 25?. Verify the power dissipated by the element. If the ?re is on for 5 hours every day, measure for a
Conservative Force : A force is told conservative when the work completed by the force in moving a particle from an instance to another instance is independent of the path followed
What is Thermodynamics ?
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