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When a bell fixed on a cycle rings, then the energy conversion that takes place is ______.
Concept: undefined >> undefined
When the stem of vibrating tuning fork is pressed on a table, the tabletop starts vibrating. These vibrations are definitely an example of ______.
Concept: undefined >> undefined
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The kinetic energy of a given body depends on the ______.
Concept: undefined >> undefined
If the mass as well as the velocity of a body is doubled then the kinetic energy of the body ______ the initial kinetic energy.
Concept: undefined >> undefined
Explain the meaning of uniform circular motion.
Concept: undefined >> undefined
Find the kinetic energy of a body of mass 5 kg moving with a uniform velocity of 10 m s-1.
Concept: undefined >> undefined
A ball of mass 0.5 kg slows down from a speed of 10 m s−1 to that of 6 m s−1. Calculate the change in the kinetic energy of the ball.
Concept: undefined >> undefined
A lens forms an image between the object and the lens. Draw a ray diagram to show the formation of such an image.
Concept: undefined >> undefined
Why is uniform circular motion said to be accelerated?
Concept: undefined >> undefined
Give one example of superconductor.
Concept: undefined >> undefined
How is the refractive index of a material related to real and apparent depth?
Concept: undefined >> undefined
An electric bulb of 300Ω draws a current of 0.4 A. Calculate the power of the bulb and the potential difference at its ends.
Concept: undefined >> undefined
Name the color code of the wire which is connected to the metallic body of an appliance.
Concept: undefined >> undefined
State Fleming’s left hand rule.
Concept: undefined >> undefined
Draw a diagram of a block and tackle system of pulleys having a velocity ratio of 5. In your diagram indicate clearly the points of application and the directions of the load L and effort E. Also mark the tension T in each strand.
Concept: undefined >> undefined
Name the force required for circular motion. State its direction.
Concept: undefined >> undefined
With reference to the direction of action, how does a centripetal force differ from centrifugal force?
Concept: undefined >> undefined
Is centrifugal force the force of rection of centripetal force?
Concept: undefined >> undefined
The main fuse is connected in ______.
Concept: undefined >> undefined
