A electric dipole is placed at an angle of 30⁰ to a non-uniform electric field. The dipole will experience
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(a) a torque only (b) a translational force only in the direction of […]
A string is stretched between fixed points seperated by 75 cm. It is observed to have resonant frequencies of 420 Hz and 315 Hz. There are no other resonant frequencies between these two. Then, the […]
A thermocouple is made from two metals, antimony and bismuth. If one junction on the couple is kept hot and the other is kept cold then, an electric current will
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(a) flow […]
A solid which is transparent to visible light and whose conductivity increases with temperature is formed by
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(a) Metallic binding (b) Ionic binding (c) Covalent binding (d) Van der walls binding
Correct […]
The flux linked with a coil at any intant t is given by ?=10t² – 50t + 250. The induced emf at t=3 sec is
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(a) 190 V (b) -190 V (c) […]
Starting from the origin, a body oscillates simple harmonically with a period of 2s. After what time will its kinetic energy by 75% of the total energy?
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(a) 1/12 sec (b) 1/6 […]
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