Question

# An object is placed 20 cm in front of a plano– convex lens of focal length 15 cm The plane surface of the lens is silvered The image will be formed at a distance

- 60 cm to the left of the lens
- 60 cm to the right of the lens
- 12 cm to the left of the lens
- 12 cm to the right of the lens

## The correct answer is: 12 cm to the left of the lens

### Related Questions to study

### Two thin convex lenses of focal lengths f_{1} and f_{2} are separated by a horizontal distance d and their centers are displaced by a vertical separation D as shown in the figure : Taking the origin of coordinates, O, at the center of the first lens, the x and y-coordinates of the focal point of this lens system, for a parallel beam of rays coming from the left, are given by :

### Two thin convex lenses of focal lengths f_{1} and f_{2} are separated by a horizontal distance d and their centers are displaced by a vertical separation D as shown in the figure : Taking the origin of coordinates, O, at the center of the first lens, the x and y-coordinates of the focal point of this lens system, for a parallel beam of rays coming from the left, are given by :

### For a convex lens, if real image is formed the graph between (u + v) andu or v is as follows

### For a convex lens, if real image is formed the graph between (u + v) andu or v is as follows

### A ray OP of monochromatic light is incident on the face AB of prism ABCD near vertex B at an incident angle of 60^{0} (see figure) If the refractive index of the material of the prism is , which of the following is (are) correct?

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### Man and mouse cells are treated with red rhodamine and Green fluorescent dyes separately and then are made to fuse. The resultant cells when kept at 37ºC, the distribution of dye on the surface of cell will be like–

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### Which of the following statements is not correct?

### Which of the following statements is not correct?

### If then adj A

### If then adj A

### Which of the following is not true

### Which of the following is not true

### Which one of the following statements is true

### Which one of the following statements is true

### The inverse of is

### The inverse of is

### The inverse of matrix is

A real number multiplicative inverse is the number that, when multiplied by the original number, produces 1 (the identity). Because a× 1/a= 1 is the multiplicative inverse of a. When the inverse of a matrix is multiplied by a given matrix, it produces a multiplicative identity. For example, the inverse of a matrix A is A-1 and A.A-1=A-1.A=I, where I is the identity matrix.

A square matrix with one on the diagonal and zeros everywhere else is known as an identity matrix. Think of the identity matrix as the matrix's prime number.

An invertible matrix is one for which it is possible to calculate the inverse matrix and for which the determinant is not zero.

### The inverse of matrix is

A real number multiplicative inverse is the number that, when multiplied by the original number, produces 1 (the identity). Because a× 1/a= 1 is the multiplicative inverse of a. When the inverse of a matrix is multiplied by a given matrix, it produces a multiplicative identity. For example, the inverse of a matrix A is A-1 and A.A-1=A-1.A=I, where I is the identity matrix.

A square matrix with one on the diagonal and zeros everywhere else is known as an identity matrix. Think of the identity matrix as the matrix's prime number.

An invertible matrix is one for which it is possible to calculate the inverse matrix and for which the determinant is not zero.