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### is equal to:

### is equal to:

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### If the chord through the points whose eccentric angles are and on the ellipse =1 passes through the focus (ae, 0), then the value of tan tan = 0 is –

### If the chord through the points whose eccentric angles are and on the ellipse =1 passes through the focus (ae, 0), then the value of tan tan = 0 is –

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physics-

### For a certain mass of a gas Isothermal relation between ‘P’ and ‘V’ are shown by the graphs at two different temperatures T_{1} and T_{2} then

### For a certain mass of a gas Isothermal relation between ‘P’ and ‘V’ are shown by the graphs at two different temperatures T_{1} and T_{2} then

physics-General

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maths-General

maths-

### If the chord joining two points whose eccentric angles are and cuts the major axis of an ellipse + = 1 at a distance c from the centre, then tan . tan is equal to

### If the chord joining two points whose eccentric angles are and cuts the major axis of an ellipse + = 1 at a distance c from the centre, then tan . tan is equal to

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maths-

### P(a cos, b sin) is any point on the ellipse + = 1 Now if this ellipse is rotated anticlockwise by 90º and P reaches then co-ordinate of are -

### P(a cos, b sin) is any point on the ellipse + = 1 Now if this ellipse is rotated anticlockwise by 90º and P reaches then co-ordinate of are -

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### Normal to the ellipse intersects the major and minor axis at P and Q respectively then locus of the point dividing segment PQ in 2 : 1 is -

Equation of normal 8x sec – 7y cosec = 15

, Q

3h = , 3k =

cos = , sin =

hence locus = 1

, Q

3h = , 3k =

cos = , sin =

hence locus = 1

### Normal to the ellipse intersects the major and minor axis at P and Q respectively then locus of the point dividing segment PQ in 2 : 1 is -

maths-General

Equation of normal 8x sec – 7y cosec = 15

, Q

3h = , 3k =

cos = , sin =

hence locus = 1

, Q

3h = , 3k =

cos = , sin =

hence locus = 1

physics-

### Given graph gives variation of with P for 1gm of oxygen at two different temperatures T_{1} and T_{2}. If density of oxygen The value of at point A and relation

### Given graph gives variation of with P for 1gm of oxygen at two different temperatures T_{1} and T_{2}. If density of oxygen The value of at point A and relation

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biology

### Legume plants are important for crop production because they :

### Legume plants are important for crop production because they :

biologyGeneral

maths-

### The limiting value of (cos x)^{1/sin x} as x → 0 is :

### The limiting value of (cos x)^{1/sin x} as x → 0 is :

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maths-

### Let f : R → R be a differentiable function satisfying f (x) = f (x – y) f (y) " x, y Î R and f ¢ (0) = a, f ¢ (2) = b then f ¢ (-2) is

### Let f : R → R be a differentiable function satisfying f (x) = f (x – y) f (y) " x, y Î R and f ¢ (0) = a, f ¢ (2) = b then f ¢ (-2) is

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physics-

### A thin equiconvex lens of refractive index 3/2 is placed on a horizontal plane mirror as shown in figure. The space between the lens and the mirror is filled with a liquid of refractive index 4/3. It is found that when a point object is placed 15 cm above the lens on its principal axis, the object coincides with its own image. If another liquid is filled instead of water, the object and the image coincide at a distance 25 cm from the lens. Calculate the refractive index of the liquid

### A thin equiconvex lens of refractive index 3/2 is placed on a horizontal plane mirror as shown in figure. The space between the lens and the mirror is filled with a liquid of refractive index 4/3. It is found that when a point object is placed 15 cm above the lens on its principal axis, the object coincides with its own image. If another liquid is filled instead of water, the object and the image coincide at a distance 25 cm from the lens. Calculate the refractive index of the liquid

physics-General

physics-

### A thin equiconvex lens of refractive index 3/2 is placed on a horizontal plane mirror as shown in figure. The space between the lens and the mirror is filled with a liquid of refractive index 4/3. It is found that when a point object is placed 15 cm above the lens on its principal axis, the object coincides with its own image. The radius of curvature of the convex surface is

### A thin equiconvex lens of refractive index 3/2 is placed on a horizontal plane mirror as shown in figure. The space between the lens and the mirror is filled with a liquid of refractive index 4/3. It is found that when a point object is placed 15 cm above the lens on its principal axis, the object coincides with its own image. The radius of curvature of the convex surface is

physics-General

physics-

### A glass shere of radius 2R and refractive index ‘n’ has a spherical. When viewer is on right side of the hollow sphere, what will be the apparent change in position of the object?

### A glass shere of radius 2R and refractive index ‘n’ has a spherical. When viewer is on right side of the hollow sphere, what will be the apparent change in position of the object?

physics-General

physics-

### A glass shere of radius 2R and refractive index ‘n’ has a spherical. When viewer is on left side of the hollow sphere, what will be the shift in position of the object?

### A glass shere of radius 2R and refractive index ‘n’ has a spherical. When viewer is on left side of the hollow sphere, what will be the shift in position of the object?

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