Trigonometric Tables - Introduction To Trigonometry, Class 10 Mathematics - Class 10 MCQ

The mirror used in the construction of shaving glass is​

Rahul is standing in front of a plane mirror. The distance between Rahul and his image is 150cm. If Rahul’s distance from the mirror is x. What could be the possible value of x?​

Light travels faster in substance X as compared to substance Y, then refractive index is greater for​

The bending of light ray due to change in its speed is​

 A medium through which light propagates easily is a​

 Drop of water behaves likes a​

 An object is 9 cm from a magnifying lens and its image is formed 36 cm from the lens. Magnification of the lens is.​

A person having myopic eyes uses a concave lens of focal length 50 cm. What is the power of the lens?​

A doctor has prescribed a corrective lens of power +1.5 D to one of his patients. The focal length and the nature of the lens is

In order to get a diminished and virtual image, the object can be placed anywhere in front of a:​

 An object is placed 10 cm from a diverging lens which forms an image 6.5 cm from the lens. What is the focal length of the lens?​

How many foci does a lens have?​

The image formed by plane mirror is

 Where should an object be placed in front of a convex lens to get a real image of the size of the object?

A student obtained a sharp image of a burning candle, placed at the farther end of a laboratory table, on a screen using a concave mirror. For getting a better value of focal length of the mirror, what should the student do?

SI unit of power of lens is​

Which one of the following materials cannot be used to make lens?​

 Which one is correct as the new cartesian sign conventions?

The maximum image distance in case of a concave lens of focal length ‘f’ is :​

 The unit of linear magnification is​

A ray of light incident on the optical centre of a spherical lens, after refraction passes through:​

 Light enters from air to glass plate having refractive index 1.5. The speed of light in glass is​