SATHEE: Optics Question 206

Optics Question 206

Question: A plane wavefront $(λ = 6 \times 10^{- 7} m)$ falls on a slit $0.4 m m$ wide. A convex lens of focal length $0.8 m$ placed behind the slit focusses the light on a screen. What is the linear diameter of second maximum

[RPMT 2001]

Options:

A) $6 m m$

B) $12 m m$

C) $3 m m$

D) $9 m m$

Show Answer

Answer:

Correct Answer: A

Solution:

For secondary maxima $d \sin θ = \frac{5 λ}{2}$

$\Rightarrow d θ = d . \frac{x}{D (\approx f)} = \frac{5 λ}{2}$

$\Rightarrow 2 x = \frac{5 λ f}{d} = \frac{5 \times 0.8 \times 10^{- 7}}{4 \times 10^{- 4}} = 6 \times 10^{- 3} m = 6 m m$

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Optics Question 206

Question: A plane wavefront $(λ = 6 \times 10^{- 7} m)$ falls on a slit $0.4 m m$ wide. A convex lens of focal length $0.8 m$ placed behind the slit focusses the light on a screen. What is the linear diameter of second maximum

Options:

Answer:

Solution:

इंजीनियरिंग की तैयारी

चिकित्सा तैयारी

एनसीईआरटी पुस्तकें और समाधान

महत्वपूर्ण संसाधन

अन्य संसाधन

पाठ्यक्रम

परीक्षा मंच

नमूना मॉक टेस्ट

सदस्यता

एनसीईआरटी व्यायाम वीडियो समाधान

Optics Question 206

Question: A plane wavefront (λ=6×10−7m) falls on a slit 0.4mm wide. A convex lens of focal length 0.8m placed behind the slit focusses the light on a screen. What is the linear diameter of second maximum

Options:

Answer:

Solution:

इंजीनियरिंग की तैयारी

चिकित्सा तैयारी

एनसीईआरटी पुस्तकें और समाधान

महत्वपूर्ण संसाधन

अन्य संसाधन

पाठ्यक्रम

परीक्षा मंच

नमूना मॉक टेस्ट

सदस्यता

एनसीईआरटी व्यायाम वीडियो समाधान

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Question: A plane wavefront $(λ = 6 \times 10^{- 7} m)$ falls on a slit $0.4 m m$ wide. A convex lens of focal length $0.8 m$ placed behind the slit focusses the light on a screen. What is the linear diameter of second maximum