Team A consists of 7 boys and n girls and Team B has 4 boys and 6 girls. If a total of 52 single matches can be arranged between these two teams... View Article
In a series LR circuit, power of 400W is dissipated from a source of 250 V, 50 Hz. The power factor of the circuit is 0.8. In order to bring the... View Article
An engine operates by taking a monatomic ideal gas through the cycle shown in the figure. The percentage efficiency of the engine is close to... View Article
The output characteristics of a transistor is shown in the figure. When VCE is 10V and IC = 4.0 mA, then the value of βac is __________.... View Article
The centre of mass of the solid hemisphere of radius 8 cm is x from the centre of the flat surface. Then the value of x is __________. Answer: 3... View Article
A Young's double-slit experiment is performed using monochromatic light of wavelength λ. The intensity of light at a point on the screen,... View Article
A particle moving in the xy plane experiences a velocity-dependent force, where vx and vy are the x and y components of its velocity v. If a is... View Article
Given the masses of various atomic particles mp = 1.0072 u, mn = 1.0087 u, me = 0.000548 u, mv[bar] = 0, md = 2.0141 u, where p ≡ proton, n... View Article
A student measuring the diameter of a pencil of circular cross-section with the help of a vernier scale records the following four readings 5.50... View Article
1) 0.21 A from positive to the negative terminal 2) 0.36 A from negative to the positive terminal 3) 0.42 A from positive to the negative... View Article