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Virat

Asked: October 2, 2025In: Class 10 Science

Observe the following diagram showing the conditions under which a metal ‘M’ corrodes. List your observations in each of the three cases A, B and C with the reason, if the metal ‘M’ is generally protected against corrosion by the method of galvanisation.

Case A: Significant corrosion will be observed on the metal surface because the protective zinc coating on the metal readily react with oxygen and the moisture present in the moist air. class 10 free sample paper for 2026 board exam class 10 ...

Virat

Asked: October 2, 2025In: Class 10 Science

A person allowed a narrow beam of white light from the sun to enter a dark room through a small aperture and placed a glass prism in its path in such a manner that the beam falls on the face AB of the prism as shown in the figure. A screen S is placed on the other side of the prism, facing AC. On turning the prism slowly, a beautiful band of colours is obtained on the screen. It is the spectrum of sunlight. (a) Name the phenomenon due to which a prism splits the incident white light into a band of colours. (b) State the reason of getting a band of seven colours in the above case.

The phenomenon is called dispersion of light. White light is a mixture of seven colours. Each colour has a different wavelength and, hence, is refracted (bent) by the glass prism through different angles, resulting in a band of seven distinct ...

Virat

Asked: October 2, 2025In: Class 10 Science

Study the diagram given below and answer the questions: (i) Name the defect of vision represented in the diagram. (ii) Redraw the diagram and show how a corrective lens resolves this defect? Label the lens type and focal point.

Myopia (nearsightedness) — image forms in front of the retina because the eye’s lens is too strong (focal length too short) or the eyeball is too long. class 10 free sample paper for 2026 board exam class 10 science half yearly paper ...

Virat

Asked: October 2, 2025In: Class 10 Science

Study the ray diagram of an object placed in front of a lens. (i) Write three characteristics of the image formed? (ii) In which position of the object will the magnification be – 1?

From the ray diagram, the image formed is real, inverted, and diminished because the object is placed beyond 2F₁ of a convex lens. class 10 science board exam paper 2026 sample paper for class 10 science board exam 2026

Poll

Virat

Asked: October 2, 2025In: Class 10 Science

Assertion (A): Magnetic field never intersects each other. Reason (R): If two magnetic field lines intersect, it would imply two different directions of the magnetic field at that point.

The correct answer is option (A). Magnetic field lines never intersect, as stated in the assertion. The reason is correct because intersection would imply two field directions at a single point, which is impossible. Thus, both A and R are ...

Observe the following diagram showing the conditions under which a metal ‘M’ corrodes. List your observations in each of the three cases A, B and C with the reason, if the metal ‘M’ is generally protected against corrosion by the method of galvanisation.

Study the diagram given below and answer the questions: (i) Name the defect of vision represented in the diagram. (ii) Redraw the diagram and show how a corrective lens resolves this defect? Label the lens type and focal point.

Study the ray diagram of an object placed in front of a lens. (i) Write three characteristics of the image formed? (ii) In which position of the object will the magnification be – 1?

Assertion (A): Magnetic field never intersects each other. Reason (R): If two magnetic field lines intersect, it would imply two different directions of the magnetic field at that point.

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