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A particle is projected from the bottom of an inclined plane at an angle θ with the surface of the incline.The angle of the inclined plane is 45.For what value of θ will the particle retrace it's path after collision with t ...

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what is the average thickness of plasma membrane? a. 100-150 aμ b.75-100 aμ c.60-75 aμ d.75-100 aμ ...

{Shastras Q-21} a point charge q is brought from infinity and is placed at the center of a conducting neutral spherical shell of inner radius 'a' and outer radius 'b', then work done by external agent is. A}0 B}kq2/2b C}kq2/2 ...

Four point charges each of charge +q are rigidly fixed at the four corners of a square planar soap film of side a.The surface tension of the soap film is S.the system of charges and planar film are in equilibrium.Then find a ...

A parallel plate capacitor of capacitance C is connected to a battery and is charged to a potential difference V. Another capacitor of capacitance 2C is similarly charged to a potential difference 2V. The charging battery is ...

How to find the potentials at points A,B,C,D,E,F. *Image* ...

Can anyone (preferably the teachers or any senior in class 12) upload the Kurkushetra answer key for class 11? Thanks in advance. ...

solve dis if u can............. Einstein has been widely credited online with the following riddle, and with the claim that 98% of the world could not solve it. But several of our NIEHS scientists were able to solve it, and t ...

If a) x1 + x2 + ...................+x1007 =(2014)2 b) x1 /(x1 +1)=x2 /(x2 +3)=.....................=x1007 /(x1007 +2013) then x253 =? ...

Solve: 25x - 16y = 34 14x + 23y = 51 a) x = 1, y = 1 b) x = -1, y = 1 c) x = 2, y = 1 d) x = 1, y = 2 ...

A parallel plate capacitor of capacitance C is connected to a battery and is charged to a potential difference V. Another capacitor of capacitance 2C is similarly charged to a potential difference 2V. The charging battery is ...

The expenses of a lunch are partly constant and partly proportional to the number of guests. The expenses amount to Rs.65 to 7 guests and Rs.97 for 11 guests. Then the expenses for 18 guests will amount to a) Rs. 162 b) Rs. 1 ...

Which energy consuming process is most directly related to absorption of light by chlorophyll? a) CO2 fixation b) Formation of ATP molecules c) Formation of glucose d) Splitting of water into H+ ions, electrons and O2 ...

Range of f(x)=frac{{{x}^{2}}+34x-71}{{{x}^{2}}+2x-7} is a) [5,,9] b) (-infty ,,5]cup ,[9,,infty ) c) (5,,9) d) None of these ...

While cycling direction of friction: a) Towards direction of cycling b) Opposite to direction of cycling c) Different on the different wheels d) None of the above. ...

Which of these is not related to endoplasmic reticulum? a) It behaves as transport channel for proteins between nucleus and cytoplasm b) It transports materials between various regions in cytoplasm c) It can be the site of en ...

A ball is thrown downwards with initial speed = 6 m/s, from a point at height = 3.2 m above a horizontal floor. If the ball rebounds back to the same height then coefficient of restitution equals to a) 0.5 b) 0.75 c) 0.8 d) 1 ...

Why does the value of μ change for static friction and kinetic friction? Thanks to the person who can help me in advance. Thanks, Bye, Angikar ...

A ball is thrown upward at a velocity of 19.6 m/s. What is its velocity after 3.00 s? a) 9.8 m/s upward b) 9.8 m/s downward c) zero d) 19.6 downward ...

The second’s hand of a watch has length 6 cm. Speed of end point and magnitude of difference of velocities at two perpendicular positions will be a) 6.28 and 0 mm/s b) 8.88 and 4.44 mm/s c) 8.88 and 6.28 mm/s d) 6.28 and 8. ...

Pn= (1+x)(1-x2)(1+x3)....(1-x4n)/[(1+x)(1-x2)(1+x3)....(1-x2n)]2 Find lim(x→-1)Pn ...

The incorrect statement is a) sin heta =-frac{1}{5} b) cos heta =1 c) sec heta =frac{1}{2} d) an heta =20 ...

Chlorophyll is present a) In the grana of chloroplasts b) On the surface of chloroplasts c) In the stroma d) Dispersed throughout the chloroplasts ...

A particle is projected from the origin in such a way that it passes through a given point P(a,b). What is the minimum speed required to do so? ...

A boy standing in front of a wall at a distance of 85m produces 2claps/s. he notices that the sound of his clapping coincides with the echo. The echo is heard only once when clapping is stopped. V=? a) 330 m/s b) 340 m/s c) 3 ...

A particle is projected from a point A,whose position vector is 2i + 3j,with initial velocity vector 20i + 30j + 20k,where i and k are horizontal and j is the unit vector in the direction of the upwards vertical. Find a vecto ...

A ball is dropped from the top of a building at t = 0. At a later time t = t0,a second ball is thrown downwards with initial speed v0. Using relative motion concept, find the time at which the two balls will meet. ...

What is the value of M and N respectively if M39048458N is divisible by 8 and 11,where M and N are single digit integers? how to solve it? ...

Is it possible to give he Kurukshetra test online? I am having troubles coming on Sunday on 10 A.M. I am in Class 11 is that helps. ...