ThePrismSolutions

ThePrismSolutions

DAILY PRACTICE PAPER



Q1. The wave length coressponding to photon is 0.016 A°. Its K.E. ................... J. (h=6.66×10-34SI, c= 3.0 × 108 ms-1)

(A) 1.237 × 10-13
(B) 1.237 × 1013
(C) 12.37 × 10-13
(D) 12.37 × 10+13



Q2. In young's double slit experiment phase different light waves reaching 3rd bright fringe form central fringe with, is............... (λ = 5000 A)

(A) zero
(B) 2π
(C) 4π
(D) 6π



Q3. nth bright fringe of red light (λ=7500 A) coincides with (n+1)th bright fringe of green light (λ=6000 A). The value of n = .....................

(A) 8
(B) 4
(C) 2
(D) I



Q4. Which of the following will undergo maximum diffration ?

(A) α- particle
(B) γ-rays
(C) radio waves
(D) light waves



Q5. A slit width 12*10-7 m is illminated by light of wavelenght 6000 A. The angular width of the central maxima is appoximately................

(A) 30°
(B) 60°
(C) 90°
(D) 0°



Q6. The distance between the first and sixth minima in the diffration pattern of a single slit, it is 0.5 mm. The screen is 0.5 m away from the slit. If the wavelength of light is 5000 A°. Then the width of the slit will be ............... mm

(A) 5
(B) 2.5
(C) 1.25
(D) 1.0



Q7. ................. change in the polarization phenomia of light ?

(A) Intensity
(B) Wavelenght
(C) Phase
(D) Frequency



Q8. In young's double slit experiment the phase difference is constant between two source is π/2. The intensity at a point equal distance from the slits of max. intensity I0 is ...................

(A) 3 I0
(B) I0/2
(C) I0
(D) 3I0/4



Q9. The two coherence source of intensity β produce interference. The fringe visibility will be .......

(A) 2β
(B) β/2
(C) √β/1+β
(D) 2√β/1+β



Q10. A polarizer is used for ..........

(A) produce polarzised light
(B)produce unpolarized light
(C) Produce unpolarized light
(D) none of these



ANSWER


(Ans 1.) A
(Ans 2.) D
(Ans 3.) B
(Ans 4.) C
(Ans 5.) B
(Ans 6.) B
(Ans 7.) A
(Ans 8.) B
(Ans 9.) D
(Ans 10.) A




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