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In this video I am going to discuss MCQ's of physics topic light. A convex lens of focal length 15 cm produces a magnification of 4 the object is placed at If a magnification of −1 (minus one) is to be obtained by using a converging mirror, the object needs to be placed at the centre of curvature so that an image of same size as the object can be formed. This video is uploaded by Alpha Academy,...

In this video I am going to discuss MCQ's of Light chapter 10 Science class X for CBSE board term1 . Which of the following can make a parallel beam of light when light from a point source is incident on it? (a) Concave mirror as well as convex lens (b) Convex mirror as well as concave lens (c) Two plane mirrors placed at 900 to each other (d) Concave mirror as well as concave lens A 10 mm long...

In this video I am going to discuss simple way to solve mcq's of trigonometry maths class X CBSE Board. I will discuss question of exercise 8.4 question 5 i) (cosec theta-cot theta)2= This video is uploaded by Alpha Academy, Udaipur alphaacademyudaipur.com/ Minakshi Porwal (9460189461)

In this video I am going to discuss simple way to solve mcq's of trigonometry maths class X CBSE Board. I will discuss question of exercise 8.4 question 4 iii) (secA tanA)(1-sinA)=a) secAb) sinA c) cosecA d) cosA This video is uploaded by Alpha Academy, Udaipur alphaacademyudaipur.com/ Minakshi Porwal (9460189461)

.In this video I am going to discuss simple way to solve mcq's of trigonometry maths class X CBSE Board. I will discuss question of exercise 8.4 question 4 iv) 1 tan2A/1 cot2A=a)sec2A b) -1 c)cot2A d)tan2A This video is uploaded by Alpha Academy, Udaipur alphaacademyudaipur.com/ Minakshi Porwal (9460189461)

In this video I am going to explain MCQ's (Multiple Choice Questions) for class X Science, Chemical Reactions and Equations useful for term 1 CBSE Board examinations. This video is uploaded by Alpha Academy, Udaipur alphaacademyudaipur.com/ Minakshi Porwal (9460189461)

In this video I am going to explain ex 3.3 question 12 , Maths Class XI This video is uploaded by Alpha Academy, Udaipur alphaacademyudaipur.com/ Minakshi Porwal (9460189461)

In this video I am going to discuss exercise 3.3 question 23, maths class XI. Ex 3.3 Q 23 Maths XI , Prove that :tan4x= tanx(1−tan 2 ​x)​/1−6tan 2 ​x tan 4 x This video is uploaded by Alpha Academy, Udaipur alphaacademyudaipur.com/ Minakshi Porwal (9460189461)

In this video I am going to discuss Exercise 3.3 Question 24. cos4𝑥=1−8sin 2 𝑥 cos 2 𝑥. This video is uploaded by Alpha Academy, Udaipur alphaacademyudaipur.com/ Minakshi Porwal (9460189461)

In this video I am going to discuss Maths Class XI misc exercise chapter 9 question 18. If a and b are the roots of x 2−3x p=0 and c and d are roots of the equation x 2−12x q where a,b,c and d forms a G.P. Prove that (q p):(q−p)=17:15 . This video is uploaded by Alpha Academy, Udaipur alphaacademyudaipur.com/ Minakshi Porwal (9460189461)

In this video I am going to discuss Maths Class XI misc exercise chapter 9 question 19. The ratio of the A.M and G.M of two positive numbers a and b, is m:n. Show that a:b This video is uploaded by Alpha Academy, Udaipur alphaacademyudaipur.com/ Minakshi Porwal (9460189461)

In this video I am going to discuss Maths Class XI misc exercise chapter 9 question 16. Q16 If If a( 1/b 1/c),b( 1/c 1/a),c( 1/a 1/b)are in A.P., prove that a, b, c are in A.P. This video is uploaded by Alpha Academy, Udaipur alphaacademyudaipur.com/ Minakshi Porwal (9460189461)

In this video I am going to discuss Maths Class XI misc exercise chapter 9 question 17. Misc Ch9 Q17 XI If a, b, c, d are in G.P, prove that (a n ​ b n ​),(b n ​ c n ​),(c n ​ d n ) are in G.P. This video is uploaded by Alpha Academy, Udaipur alphaacademyudaipur.com/ Minakshi Porwal (9460189461)

Misc Ch9 Q11 XI A G.P. consists of an even number of terms. If the sum of all the terms is 5 times

Misc Ch 9 Q10 XI The sum of three numbers in G.P. is 56. If we subtract 1,7,21 from these numbers in

Misc Ex Ch9 XI Q9 The first term of a G.P. is 1. The sum of the third and fifth term is 90. Find the

Misc Ex Ch 9 XI Q7 If f is a function satisfying f(x y)=f(x)f(y) for all x,y∈N such that f(1)=3 ,

Misc Ch 9 Q8 Maths XI The sum of some terms of a G.P. is 315,whose first term and the c ratio are 5

Ch 11 Q17 Class IX Calculate the work required to be done to stop a car of 1500kg moving at a veloc

Ch 11 Class IX Q 10 An object of mass 40kg is raised to a height of 5m above the ground what is i?

Activity 11.16 Class IX Science Work and Energy

Activity 11.15 Class IX Science Work and Energy

Activity 11.3 Chapter 11 Class X Science CBSE Ncert

Activity 11.1 Class X Science CBSE NCERT

Activity 11.2 Class X Chapter 11 Science CBSE NCERT

Ex 6.5 Q14 Class X The perpendicular from A on side BC of a ΔABC intersect BC at D such that DB=3CD.

Ex 6.5 Q13 Class X D and E are points on the sides CA and CB respectively of a triangle ABC right

Ex 6.5 Q11 Class X An aeroplane leaves an airport and flies due north at a speed of 1000 km per hour