A lift is moving down with acceleration a. A man in the lift drops a ball inside the lift. The acceleration of the ball as observed by the man in the lift and a man standing stationary on the ground are respectively :

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Wavelength of light used in an optical instrument are then ratio of their respective resolving powers (corresponding to ) is:

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## If in the circuit, power dissipation is 150 W, then R is : If in the circuit, power dissipation is 150 W, then R is : Anonymous User Physics Current Electricity 29 Feb, 2020 61 views

A charged particle q is placed at the centre of cube of length L (ABCDEPGH). Another same .charge q is placed at a distance L from O. Then the electric flux through ABCD is : Anonymous User Physics Current Electricity 29 Feb, 2020 163 views Anonymous User Physics Waves and Sound Waves 29 Feb, 2020 106 views

A tuning fork arrangement (pair) produces 4 beats/s with one fork of frequency 288. cps. A little wax is placed on the unknown fork and it then produces 2 beats/s. The frequency of the unknown fork is :

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## The real value of 'a' for which sum of square of the roots of the equation The real value of 'a' for which sum of square of the roots of the equation Anonymous User Maths Quadratic Equation 29 Feb, 2020 60 views

A Wire When connected to 220 V mains supply has power dissipation . Now the wire is cut into two equal pieces which are connected in parallel to the same supply. Power dissipation in this case is . Anonymous User Physics Current Electricity 29 Feb, 2020 77 views

If in a circular coil A of Radius R, current i is following and in another coil B of radius 2R is current 2i is flowing, then the ratio of the magnetic fields Anonymous User Physics Current Electricity 29 Feb, 2020 65 views

From a building two balls A and B are thrown such that A is thrown upwards and B is thrown downwards (both vertically). Anonymous User Physics Gravitation and Projectile 29 Feb, 2020 79 views

A ball whoose Kinetic Energy is E, is projected at an angle of 45 degree to the horizontal. The kinetic energy of the ball at the highest point of its flight will be:

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Initial angular velocity of a circular disc of mass M is . Then two small spheres of mass m are attached gently to two diametrically opposite points on the edge of the disc. What is the final angular velocity of the disc?

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