Suppose a monochromatic X-ray beam of wavelength 100 pm is sent through a Young's double slit and the interference pattern is observed on a photographic plate placed 40 cm away from the slit. What should be the separation between the slits so that the successive maxima on the screen are separated by a distance of 0.1 mm?
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The data entry operator wants to insert. 1. Photograph 2. Write remarks about the photograph 3. Underline the heading.
1. Photograph – < Img > 2. Write remarks about the photograph – < TextArea > 3. Underline the heading – < U >
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Prove that `^100 C_2^(100)C_2+^(100)C_2^(100)C_4+^(100)C_4^(100)C_6++^(100)C_(98)^(100)C_(100)=1/2[^(200)C_(98)-^(100)C_(49)]dot`
To find `S = .^(100)C_(0).^(100)C_(2)+.^(100)C_(2).^(100)C_(4)+.^(100)C_(4).^(100)C_(6)+"....."+.^(100)C_(98).^(100)C_(100)` Consider, `.^(100)C_(0).^(100)C_(2)+.^(100)C_(1).^(100)C_(3) + .^(100)C_(2).^(100)C_(4)+.^(100)C_(3)+.^(100)C_(5)+"...." + .^(100)C_(98).^(100)C_(100)` `= .^(100)C_(0).^(100)C_(98)+.^(100)C_(1).^(100)C_(97) + .^(100)C_(2).^(100)C_(96)+.^(100)C_(3).^(100)C_(95) + "....."+^(100)C_(98) .^(100)C_(0)` = Coefficients of `x^(98)` in `(1+x)^(100) (1+x)^(100)` `= .^(200)C_(98) " "(1)` Also,...
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In a routine Young’s double slit experiment the paral- lel beam of light incident on the slit plane is a mixture of wavelength distributed between` la
Correct Answer - `Deltalambdalt(lambda)/(3)`
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In Young’s double slit experiment a monochromatic light of wavelength` lambda` from a distant point source is inci- dent upon the two identical slits.
Correct Answer - (a)`4I_(0)cos^(2)((pi)/(3)+(pi)/(lambda)(mu-1)t)` (b)`t=((2n-1)lambda)/(2(mu-1))-(lambda)/(3(mu-1))"wheren=1,2,3...`
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A parallel beam of monochromatic light of frequency v is incident on a surface. Intensity of the beam is I and area of the surface is A. Find the forc
Correct Answer - (i) `(IA)/(c)` , (ii) `(2IA)/(c)` (iii) `(Iacostheta)/(c)` , (iv) `(2IAcos^(2)theta)/(c)`
2 Answers 1 views
An X-ray tube has nickel as target. The wavelength difference between the ka X-ray and the cut-off wavelength of continuous X-ray spectrum is 84 pm. F
Correct Answer - `14.8 kV`
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In a biprism experiment , a monochromatic light of wavelength ` 6 xx 10^(-7)` m is used . The distance between the slit and the prism is 10 cm and tha
Correct Answer - `0.15` cm
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A parralel beam of monochromatic light of wavelength 5000 Å is incident normally in a narrow slit of width 0.25 mm. The diffraction pattern is observe
Correct Answer - `6xx10^(-3)rad`
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A laser beam has a wavelength of `6xx10^(-7)`m and aperture of `6xx10^(-2)`m. The beam is sent towards the moon which is at a distance of `4xx10^(8)`m
Correct Answer - (i)`1.22xx10^(-5)rad(ii) 2.381xx10^(7)`m
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A laser beam has a power of 100 mW. It has an aperture of `5xx10^(-3)`m and emits a wavelength 6943 Å. The beam is focused with a lens of focal length
Correct Answer - `2.87xx10^(-10)m^(2),3.48xx10^(8)Wm^(-2)`
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