Related Questions to study
Physics
A magnifying glass is placed in the path of sun rays, and a sharp point-sized image of the Sun is obtained on a paper placed on the other side of the magnifying glass. This image is formed at the ___ of the glass.
A magnifying glass is placed in the path of sun rays, and a sharp point-sized image of the Sun is obtained on a paper placed on the other side of the magnifying glass. This image is formed at the ___ of the glass.
PhysicsGrade-7
Physics
The eye lens of a human eye is thicker in the middle as compared to the edges. It is a ___ lens.
The eye lens of a human eye is thicker in the middle as compared to the edges. It is a ___ lens.
PhysicsGrade-7
Physics
A light ray bends ____ on entering a ____.
A light ray bends ____ on entering a ____.
PhysicsGrade-7
Physics
When a parallel beam of light falls on a surface of a concave lens it ____ the rays of light in such a way that they appear to originate from a point called ____.
When a parallel beam of light falls on a surface of a concave lens it ____ the rays of light in such a way that they appear to originate from a point called ____.
PhysicsGrade-7
Physics
Concave lenses are also called ____ lenses.
Concave lenses are also called ____ lenses.
PhysicsGrade-7
Physics
The angle between the incident ray and the emergent ray is not equal to ____ degrees when the light gets refracted through a spherical lens.
The angle between the incident ray and the emergent ray is not equal to ____ degrees when the light gets refracted through a spherical lens.
PhysicsGrade-7
Physics
In the setup shown in the picture below, the sun rays are focused on a paper by a magnifying glass, which results in the paper catching fire. If the magnifying glass was replaced by a concave lens, the paper does not catch fire. Why?
In the setup shown in the picture below, the sun rays are focused on a paper by a magnifying glass, which results in the paper catching fire. If the magnifying glass was replaced by a concave lens, the paper does not catch fire. Why?
PhysicsGrade-7
Physics
A lens can only form a virtual, upright, and diminished images irrespective of the distance between the lens and the object. It is a ____ lens.
A lens can only form a virtual, upright, and diminished images irrespective of the distance between the lens and the object. It is a ____ lens.
PhysicsGrade-7
Physics
A concave lens forms a virtual, upright, and diminished image of an object ____.
A concave lens forms a virtual, upright, and diminished image of an object ____.
PhysicsGrade-7
Physics
The lens of a pair of spectacles used by a person is thinner in the middle and thicker towards the edges. The lens used in the spectacles is ____.
The lens of a pair of spectacles used by a person is thinner in the middle and thicker towards the edges. The lens used in the spectacles is ____.
PhysicsGrade-7
Physics
What kind of images does a convex lens not form?
What kind of images does a convex lens not form?
PhysicsGrade-7
Physics
A lens always forms a virtual, upright, and diminished image of an object placed in front of it. It is a ____ lens.
A lens always forms a virtual, upright, and diminished image of an object placed in front of it. It is a ____ lens.
PhysicsGrade-7
Physics
A light ray bends ____ on emerging from a ____.
A light ray bends ____ on emerging from a ____.
PhysicsGrade-7
Physics
Which of the given lenses can be used to light a fire?
Which of the given lenses can be used to light a fire?
PhysicsGrade-7
Physics
Which lens is used in a magnifying glass?
Which lens is used in a magnifying glass?
PhysicsGrade-7
