A small candle, 2.5 cm in size is placed at 27 cm in front of a concave mirror of radius of curvature 36 cm. At what distance from the mirror should a screen be placed in order to obtain a sharp image?

(1) 54 cm away from the mirror.

(2) 64 cm towards the mirror.

(3) 40 cm away from the mirror.

(4) 44 cm towards the mirror.

75%

Subtopic: Reflection at Spherical Surface |

To view explanation, please take trial in the course below.

NEET 2023 - Target Batch - Aryan Raj Singh

Please attempt this question first.

Launched MCQ Practice Books

Prefer Books for Question Practice? Get NEETprep's **Unique MCQ Books** with Online **Audio/Video/Text Solutions via Telegram Bot**

A 4.5 cm needle is placed 12 cm away from a convex mirror of focal length 15 cm. What is the magnification?

1. 0.5

2. 0.56

3. 0.45

4. 0.15

68%

Subtopic: Reflection at Spherical Surface |

To view explanation, please take trial in the course below.

NEET 2023 - Target Batch - Aryan Raj Singh

Please attempt this question first.

Launched MCQ Practice Books

Prefer Books for Question Practice? Get NEETprep's **Unique MCQ Books** with Online **Audio/Video/Text Solutions via Telegram Bot**

A small bulb is placed at the bottom of a tank containing water to a depth of 80 cm. What is the area of the surface of water through which light from the bulb can emerge out? The Refractive index of water is 1.33. (Consider the bulb to be a point source.)

(1) 5.22 ${m}^{2}$

(2) 1.33 ${m}^{2}$

(3) 2.61 ${m}^{2}$

(4) 1.30 ${m}^{2}$

61%

Subtopic: Refraction at Plane Surface |

To view explanation, please take trial in the course below.

NEET 2023 - Target Batch - Aryan Raj Singh

Please attempt this question first.

Launched MCQ Practice Books

Prefer Books for Question Practice? Get NEETprep's **Unique MCQ Books** with Online **Audio/Video/Text Solutions via Telegram Bot**

A prism is made of glass of unknown refractive index. A parallel beam of light is incident on the face of the prism. The angle of minimum deviation is measured to be 40°. What is the refractive index of the material of the prism? The refracting angle of the prism is 60°.

1. 1.43

2. 1.33

3. 1.50

4. 1.53

50%

Subtopic: Prisms |

To view explanation, please take trial in the course below.

NEET 2023 - Target Batch - Aryan Raj Singh

Please attempt this question first.

Launched MCQ Practice Books

**Unique MCQ Books** with Online **Audio/Video/Text Solutions via Telegram Bot**

Double-convex lenses are to be manufactured from a glass of refractive index 1.55 with both faces of the same radius of curvature. What is the radius of curvature required if the focal length is to be 20 cm?

(1) 20 cm

(2) 22 cm

(3) 24 cm

(4) 15 cm

76%

Subtopic: Lens Makers' Formula |

To view explanation, please take trial in the course below.

NEET 2023 - Target Batch - Aryan Raj Singh

Please attempt this question first.

Launched MCQ Practice Books

**Unique MCQ Books** with Online **Audio/Video/Text Solutions via Telegram Bot**

A tank is filled with water to a height of 12.5 cm. The apparent depth of a needle lying at the bottom of the tank is measured by a microscope to be 9.4 cm. If water is replaced by a liquid of refractive index 1.63 up to the same height, by what distance would the microscope have to be moved to focus on the needle again?

(1) 1.73 cm

(2) 1.98 cm

(3) 1.01 cm

(4) 1.11 cm

55%

Subtopic: Refraction at Plane Surface |

To view explanation, please take trial in the course below.

NEET 2023 - Target Batch - Aryan Raj Singh

Please attempt this question first.

Launched MCQ Practice Books

**Unique MCQ Books** with Online **Audio/Video/Text Solutions via Telegram Bot**

A beam of light converges at a point P. Now a lens is placed in the path of the convergent beam 12cm from P. At what point does the beam converge if the lens is a convex lens of focal length 20cm?

(1) 7.5 cm away from the lens on the left side.

(2) 7.5 cm away from the lens on the right side.

(3) 6.5 cm away from the lens on the left side.

(4) 6.5 cm away from the lens on the right side.

64%

Subtopic: Lenses |

To view explanation, please take trial in the course below.

NEET 2023 - Target Batch - Aryan Raj Singh

Please attempt this question first.

Launched MCQ Practice Books

**Unique MCQ Books** with Online **Audio/Video/Text Solutions via Telegram Bot**

An object of size 3.0 cm is placed 14 cm in front of a concave lens of focal length 21 cm. the image produced by the lens is:

(1) inverted and virtual.

(2) erect and real.

(3) erect and virtual.

(4) inverted and real.

64%

Subtopic: Lenses |

To view explanation, please take trial in the course below.

NEET 2023 - Target Batch - Aryan Raj Singh

Please attempt this question first.

Launched MCQ Practice Books

**Unique MCQ Books** with Online **Audio/Video/Text Solutions via Telegram Bot**

What is the focal length of a convex lens of focal length 30 cm in contact with a concave lens of focal length 20 cm?

(1) -45 cm

(2) -55 cm

(3) -50 cm

(4) -60 cm

76%

Subtopic: Lenses |

To view explanation, please take trial in the course below.

NEET 2023 - Target Batch - Aryan Raj Singh

Please attempt this question first.

Launched MCQ Practice Books

**Unique MCQ Books** with Online **Audio/Video/Text Solutions via Telegram Bot**

A compound microscope consists of an objective lens of focal length 2.0 cm and an eyepiece of focal length 6.25 cm separated by a distance of 15 cm. How far from the objective should an object be placed in order to obtain the final image at the least distance of distinct vision (25 cm)?

(1) 2.5 cm

(2) 0.5 cm

(3) 1.5 cm

(4) 5.0 cm

59%

Subtopic: Simple & Compound Microscope |

To view explanation, please take trial in the course below.

NEET 2023 - Target Batch - Aryan Raj Singh

Please attempt this question first.

Launched MCQ Practice Books

**Unique MCQ Books** with Online **Audio/Video/Text Solutions via Telegram Bot**