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Using the curve, how do you infer that for given prism, the angle of minimum deviation δmin is unique for the given light?
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How does the deviation produced by a prism depend on the refraction index of its material.
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How does the deviation produced by a prism depend on the wavelength of incident light?
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The critical angle for glass-air interface is :
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A total reflecting equilateral prism can be used to deviate a ray of light through:
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Give reason why the smoke from fire looks white.
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It is dangerous to connect the switch in the neutral wire. Explain your answer.
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A switch must be connected in the ______.
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What is nucleus of an atom? Compare its size with that of the atom. Name its constitutents. How is the number of these constituents determined by the atomic number its atomic model.
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Name two radioactive substances.
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A radioactive substance is oxidized. What changes would you expect to take place in the nature of radioactivity? Explain your answer.
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A radioactive source emits three types of radiations.
Name the radiation which has the highest ionizing power.
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What happens to the position of an element in the periodic table when it emits an alpha particle
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A certain nucleus A (mass number 238 and atomic number 92) is radioactive and becomes a nucleus B (mass number 234 and atomic number 90) by the loss of one particle.
What particle was emitted?
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A nucleus is \[\ce{^24_11 Na}\] β-radioactive.
Write the equation represent β-decay.
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An element P disintegrates by α - -emission and the new element suffers two further disintegrations, both by β -emission, to form an element Q. Explain the fact that P and Q are the isotopes.
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During the emission of a beta particle, the ______ number remains same.
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State three safety precautions that you would take while handling the radioactive substances.
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Why should a radioactive substance not be touched by hands?
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There is no gain in mechanical advantage in the case of a single fixed pulley. Explain, why the pulley is then used?
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