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Tanishka Gupta asked a question
Subject: Physics, asked on on 14/5/18
Solve que 6:

6. ​A concave spherical surface of radius of curvature 10 cm separates  two medium x & y of refractive index 4/3 & 3/2 respectively. If the is placed along principal axis in medium X then 

(A) image is always real 
(B) image is real if the Object distance is greater than 90 cm 
(C) image is always virtual 
(D) image is virtual if the object distance is less man 90 cm
 
Samridhi Jain asked a question
Subject: Physics, asked on on 6/2/18
The Intensity At A Point At A Distance R From A Source Which Produces Cylindrical Wavefront Varies As
Shifa asked a question
Subject: Physics, asked on on 20/8/16
monochromatic light of wavelength 400 mm and 560 mm are incidents simultaneously and normally on double slit apparatus​ whose slit separation  is 0.1 mm and screen distance is 1 m.distance between areas of total darkness will be
Tanishka Gupta asked a question
Subject: Physics, asked on on 14/5/18
Solve question 5

5.  The adjacent figure shows cross section of a hollow glass tube of internal radius r, external radius R and index of refraction n. For two rays DE and ABC (in which DE lies on ODE and DE is parallel to BC), the separation r1 will be
 
(A) r1 = n - 1R                             (B) r1= n2R                                      (C) r1 = nr                                 (D) r1 = n2r​
Sandali Khare asked a question
Subject: Physics, asked on on 4/4/18
A person lives in a high-rise building on... A person lives in a high-rise building on the bank of a river 50 m wide. Across the river is a well lit tower of height 40 m. When the person, who is at a height of 10 m, looks through a polarizer at an appropriate angle at light of the tower reflecting from the river surface, he notes that intensity of light coming from distance X from his building is the least and this corresponds to the light coming from light bulbs at height ‘Y’ on the tower. The values of X and Y are respectively close to?
Sandali Khare asked a question
Subject: Physics, asked on on 27/2/18
What is wane front? State its relation with ray of light.
Kiran Nayak asked a question
Subject: Physics, asked on on 19/3/17
why is frezneldistance used
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