A mass of lead is embedded in a block of aluminum which is 2 mm thick. – InterviewSolution

InterviewSolution

1.	A mass of lead is embedded in a block of aluminum which is 2 mm thick. Radiations from a radioactive source incident on the side of the block produce a shadow on a fluorescent screen placed beyond the block. The shadow of the block of aluminum is fainter than the shadow of lead. Give reason for this difference.
Answer» α -particles given out from a radioactive source are able to pass through 2 mm aluminum block, while β and γ - radiations are unable to penetrate through. So it produces faint radiation. Lead does not allow any of the α, β or γ radiations to pass through, so it produces dark shadow.

Discussion

No Comment Found

Related InterviewSolutions

A plant is kept in a dark cupboard for about 48 hours before conducting any experiment on photosynthesis to :(A) Remove starch from the plant. (B) Ensure that starch is not translocated from the leaves. (C) Remove chlorophyll from the leaf of the plant. (D) Remove starch from the experimental leaf.
The producer of Lime Fresh’ tea introduces ‘Buy one Get one’ scheme on all the products of ‘Lime Fresh’. Identify the promotional strategy’ used by the producer. State any one objective that could be met by this strategy.
A stringed musical instrument, such as the sitar,is provided with a number of wires of different thicknesses. explain the reason for this.
Mention whether the following would result in inflow, outflow or no flow of cash :(i) Issue of fully paid Bonus Shares (ii) Cash withdrawn from Bank
State with reason whether the following would result in inflow, outflow or no flow of cash :(i) Charging depreciation on furniture. (ii) Cash withdrawn for bank for office use.
Give four points of anatomical differences between a monocot stem and a dicot stem.
State the conditions required for total internal reflection of light to take place.
State the conditions required for total internal reflection of light to take place.
(i) When does a ray of light falling on a lens pass through it undeviated ? (ii) Which lens can produce a real and inverted image of an object ?
When acoustic resonance takes place a loud sound is heard. Why does this happen ? Explain.