Science Career Classes

CONGRATULATIONS. CONGRATULATIONS. CONGRATULATIONS

ईस साल (2017) के बच्चों ने ही तोड़ा पिछले साल का रिकॉर्ड

पिछले साल हमारे COACHING से जहाँ। 11 बच्चों को 10 CGPA आया वही ईस साल 16 बच्चों ने 10 CGPA SCORE कियाI

1.PANKHURI KUMARI ----10 CGPA
2.AKANSHA SULTANIYA ----10 CGPA
3.SHEEKHA KUMARI---------'10 CGPA
4.KISHLAY KUMAR--------10 .,,
5.SHRISTI PRIYA-------10,,
6.AMARTYASEN----------''''10,,
7.PRIYANKA VERMA-------------'10,,
8.SUDARSHAN KUMAR----------------10,,
9.HARIDARSHAN-----10,,
10.PRERNA KUMARI--- ------10,,
11.SNEHA BHARTI-----------'-10,,
12. PRIYANSHU KUMAR-------------'10,,
13.ANISH KUMAR--------10 CGPA
14. Shamvabhi Prita-------'10 cgpa
15. Alok Kumar -------'10 cgpa
16. Ranjeet Kumar --------------10cgpa

OTHER RESULT
AJAY KUMAR------9.8 CGPA
ANUVARAT MR. -- 9.8
BIDHI BHARTI ---9.8
Shushant Kumar -----9.8
SHIVANK KUMAR---9.6
AVINASH KUMAR----9.6
SHANU SARAF---9.6
KIRTI KIRAN------9.6
SONAL PRITA---9.4
DHEERAJ KUMAR ------9.4
VIKASH KUMAR----9.4
SHREYA--------9.4
SONI KUMARI---9.4
SHREYA MEHTA----9.4
JAY KUMAR-----9.3
APERNA KRI----9.3
NIKHIL KUMAR----9.2
SUBHANGINI----9.2
PARAS GAUR-----9.2
ROHIT GUPTA----9.2
Etc. Etc. Etc.........

7.pr

All the students are INVITED to Coaching for taking प्रसाद Timing ----- JAY PRAKASH NAGAR Branch---- 9:30 to 10:30 a.m. RAJENDRA NAGAR Branch ------ 11:30 a.m. to 12 :30 p.m.

Refraction of light

(1).A plane mirror is placed 22.5 cm in front of a concave mirror of focal length 10 cm. Find where an object can be placed between the two mirrors, so that the first image in both the mirrors coincides

(2). A small fish 0.4 m below the surface of a leke is viewed through a simple converging lens of f = 3 m. The lens is kept at 0.2 m above the water surface such that the fish lie on the optical axis of the lens. Find the image of the fish seen by observer, the refractive index of water = 4/3.

(3). A concave lens focusses a distant object 40 cm from it on a screen placed 10 cm away from it. A glass plate (µ = 1.5) and of thickness 3 cm is inserted between lens and a screen, where should the object be placed, so that its image is again focussed on the screen.

(4). Determine the focal length of a convex lens, if with the distance between an object and its image being equal to l = 45 cm, magnification m = -2.0.

(5) A convex lens is combined with a concave lens.if their ratio of focal length is 2/3 , and their equivalent focal length is 30 cm, then what is their individual focal length.

(6). A lens forms a real image 3 cm high of an object 1 cm high. If the separation of object and image is 15 cm , find the focal length of the lens?

(7). A ray of light is incident at an angle of 60° on a horizontal plane mirror. Through what angle should the mirror be tilted to make the reflected ray horizontal?

(8). A bubble inside a glass slab appears to be at a depth of 3 cm from one face and 2 cm from opposite face. If refractive index of glass is 1.5, what is the actual thickness of slab?