Distinguish between optical and acoustic resonance.
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What is anti - noise?
If the distance separating two charges is doubled, the force between them decreases by what multiple factor?
Explain the Washing soda ?
Describe the Infra-red and Ultra-voilet rays?
What is a positron?
For measuring weight of 2cm3 piece of density 4gm/cm3 which spring balance is best suited what is the range and least count how we calculate
Explain what is the translucent?
Can a vector have a component equal to zero and still have a nonzero magnitude?
Explain the universal law of universal gravitation?
The principle of action of points is used in A. capacitors B. inductors C. resistors D. lightning arrestors
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Explain what is the difference between diffraction and interference?
When a bicycle is in motion, the force of friction exerted by the ground on the two wheels is such that it acts a) In the backward direction on the front wheel and in the forward direction on the rear wheel. (b) In the forward direction on the front wheel and in the backward direction on the rear wheel. (c) In the backward direction on both the front and rear wheels. (d) In the backward direction on both the front and rear wheels.