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Ask QuestionPosted by Techa Hakhun 5 years, 5 months ago
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Posted by Mohd Anas 5 years, 5 months ago
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Khushi Jaiswal 5 years, 4 months ago
Posted by Uday Singh 5 years, 5 months ago
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Ram Kushwah 5 years, 3 months ago
secθ= cosec60
=cosec(90-30)=sec30 ( As cosec(90-θ)=secθ)
so θ=30
Now 2cos2θ-1
=2cos60-1
=2*1/2-1
=1-1=0
Posted by Ozair Ozair 5 years, 5 months ago
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Posted by Kamlesh Bansal 5 years, 5 months ago
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Yogita Ingle 5 years, 5 months ago
The Lok Adalat has its own advantage because it delivers quick and inexpensive justice.
Posted by Kamlesh Bansal 5 years, 5 months ago
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Yogita Ingle 5 years, 5 months ago
Gandhi had made certain demands on behalf of the whole of the Indian National Congress to the British Government. When these demands were not fulfilled, the Civil Disobedience Movement was launched in 1930.
Posted by Manisha Nag 5 years, 5 months ago
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Dhaval Sangani 5 years, 2 months ago
Yogita Ingle 5 years, 5 months ago
The critical angle is the angle of incidence beyond which rays of light passing through a denser medium to the surface of a less dense medium are no longer refracted but totally reflected.
Posted by Darpan Verma 5 years, 5 months ago
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Yogita Ingle 5 years, 5 months ago
Potential difference (V)= 15 V
Charge (Q)= 3C
We know that
The potential difference(p.d) between two point in an electric circuit is defined as the amount of work done in moving a unit charge from one point to the other point.
Potential difference (V) = work done (W)/Charge (Q)
V= W/Q
Putting the values in the above formula we get:
15 V = W / 3 C
W= 15 V × 3 C
W= 45 J
Hence, the work done in moving the charge is 45 J.
Posted by Ritika Agarwal 5 years, 5 months ago
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Khushi Jaiswal 5 years, 4 months ago
Posted by Davinder Kaur 5 years, 5 months ago
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Posted by Kamlesh Bansal 5 years, 6 months ago
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Yogita Ingle 5 years, 6 months ago
| Concave Lens | Convex Lens |
|
The image formed is upright, virtual, and smaller size than the object. The position of the image formed is in between the lens and the object regardless of object’s position |
The image formed is inverted, real, and smaller than the object when the object is placed at Focus. The image formed is inverted, real, and same size as the object when the object is placed at 2F. The image formed is inverted, real, and larger than the object when the object is placed between 2F and F. No image is formed when the object is placed at Focus (F). The image formed is upright, Virtual, and larger than the object when the object is placed on the same side of the lens. |
Posted by Rampal Singh 5 years, 6 months ago
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Lokesh C S 5 years, 5 months ago
Posted by Rampal Singh 5 years, 6 months ago
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Prerna Karamchandani 4 years, 9 months ago
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Posted by Nidhi Gusain 5 years, 6 months ago
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Atul Sharma 5 years, 5 months ago
Yogita Ingle 5 years, 6 months ago
Centripetal force definition is given as “The component of force acting on an object in curvilinear motion which is directed toward the axis of rotation or center of curvature.” Centripetal force unit is Newton. The centripetal force direction is always perpendicular to the direction that the object is being displaced.
Posted by Gourab Banerjee 5 years, 6 months ago
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Posted by Chandhrbhan Kushawaha 5 years, 6 months ago
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Posted by Anand Kishor Prasad 5 years, 6 months ago
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Atul Sharma 5 years, 5 months ago
Posted by Anand Kishor Prasad 5 years, 6 months ago
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Deepika P 4 years, 11 months ago
Posted by Shashank Dwivedi 5 years, 6 months ago
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Posted by Devagalla Satyanarayana 5 years, 6 months ago
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Gaurav Seth 5 years, 6 months ago
Explanation:
S.P of Rs. 5000 stock = Rs.(156100*5000)Rs.156100*5000= Rs. 7800.
Income from this stock = Rs.(12100*5000)Rs.12100*5000 = Rs. 600.
Let investment in 8 % stock be x and that in 9 % stock = (7800 - x).
Therefore,
(x*890)+(7800−x)*9108=[600+70]x*890+7800-x*9108=600+70
4x45+7800−x12=670⇔x=36004x45+7800-x12=670⇔x=3600
Therefore, Money invested in 8 % stock at 90 = Rs. 3600.
Money invested in 9 % at 108 = Rs. (7800-3600) = Rs. 4200.
Posted by Shashank Dwivedi 5 years, 6 months ago
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Posted by Shashank Dwivedi 5 years, 6 months ago
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Posted by Unish Thapa 5 years, 6 months ago
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Posted by Aarush Vishwakarma 5 years, 6 months ago
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Posted by Kamlesh Bansal 5 years, 7 months ago
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Posted by Paras Jadhav 5 years, 7 months ago
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Yogita Ingle 5 years, 7 months ago
Let us use a trick to solve it quickly
99x + 101y = 499 ............ i
101x + 99y = 501............ ii
subtract i from ii
2x - 2y = 2
x - y =1
x = 1 + y ........ iii
add i and ii
200x + 200y = 1000
x + y = 5 .................................. iv
Now from iii and iv , we get 1 + y + y = 5 or 2y = 4 or y = 2 ...... v
again from iii and v , we get x = 1 + 2 = 3
Hence x = 3 , y = 2
Posted by Paras Jadhav 5 years, 7 months ago
- 1 answers
Yogita Ingle 5 years, 7 months ago
5x + 2y = -3 ........ (i)
x + 5y = 4
x = 4 - 5y ........... (ii)
Put (ii) in (i), we get
5(4 - 5y) + 2y = -3
20 - 15y + 2y =-3
- 13y = - 3 - 20
-13y = -23
y = 23/13
Put value of y in (ii), we get
x = 4 - 5(23/13)
x = (52 - 5)/13 = 47/3
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