Which of the following materials behaves as a dielectric?
A conducting rod of length 0.2 m is rotated with angular velocity 10 rad/s about one end in a uniform magnetic field of 0.5 T perpendicular to the plane...
A stone of mass 0.3 kg tied to the end of a string is whirled round in a circle of radius 1.2 m with a speed of 20 rev./ mim in a horizontal plane. Wha...
A ball is projected from the ground at 45°. It strikes a vertical wall and rebounds with the same speed making the same angle on the other side. If th...
In a spring-block system executing SHM, at displacement x= A/2, the ratio of kinetic to potential energy is:
The half-life of a radioactive substance is 5 hours. How much of the substance remains after 15 hours?
Which of the following waves require a medium to travel?
What is the work done if a force of 15 N moves a body by 3 meters in the direction of force?
In a diffraction experiment using a single slit, the angular width of central maximum decreases when:
In a convex lens, when the object is at infinity, then the position of image is ______.
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