Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Medical
  • Please help! A thin prism having refracting angle 10° is made of glass of refractive index 1.42. This prism is combined with another thin prism of glass of refractive index 1.7. This combination produces dispersion without deviation. The refracti

A thin prism having refracting angle 10° is made of glass of refractive index 1.42. This prism is combined with another thin prism of glass of refractive index 1.7. This combination produces dispersion without deviation. The refracting angle of second prism should be :

  • Option 1)

    4°

  • Option 2)

    6°

  • Option 3)

    8°

  • Option 4)

    10°

 

Answers (1)

best_answer

As we learnt in

Condition for deviation without dispersion -

\left ( \mu _{v}-\mu _{r} \right )A+\left ( \mu{}'_{v}-\m{}'u _{r} \right )A{}'= 0

- wherein

\mu _{v} = Refractive index of violet ( prism 1)

\mu _{r}= Refractive index of red ( prism 1)

\mu{}' _{v} = Refractive index of violet ( prism 2)

\mu{}' _{r}= Refractive index of red ( prism 2)

 

 

 

For dispersion without deviation \\ \left | S_{1} \right |=\left | S_{2} \right |\\ (\mu_{1-1} )A_{1}=(\mu _{2}-1).A_{2}\\ or (1.42-1)\times 10=(1.7-1)(A_{2})\\ or A_{2}=\frac{0.42\times 10}{0.7}=6^{o}


Option 1)

4°

This option is incorrect 

Option 2)

6°

This option is correct 

Option 3)

8°

This option is incorrect 

Option 4)

10°

This option is incorrect 

Posted by

divya.saini

View full answer

NEET 2024 Most scoring concepts

    Just Study 32% of the NEET syllabus and Score up to 100% marks

Similar Questions

Trending Articles/News

anam-khan

NEET UG 2024 application correction window closes today; editable details, fees
anam-khan

NEET UG 2024: MBBS aspirants continue to demand postponement due to Lok Sabha polls
anam-khan

NEET UG 2024 application correction facility ends tomorrow

Latest Question