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Home/cbse physics sample paper 2024

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Subham Kumar
Subham Kumar
Asked: December 30, 2023In: Class 10 Science

Direct contact between which of the three coloured wires will result in a short circuit? State what happens to the current in the circuit in the case of a short circuit. Give a reason for your answer.

Direct contact between which of the three coloured wires will result in a short circuit? State what happens to the current in the circuit in the case of a short circuit. Give a reason for your answer.

In house wiring, three colored wires are typically used: Live (or Phase): Usually red or brown, carries current to the appliance. Neutral: Usually blue or black, completes the circuit. Earth (Ground): Usually green or green/yellow, provides a path for electrical ...

cbsecbse biology sample paper 2024cbse chemistry sample paper 2024cbse class 10 science sample question paper 2023-2024cbse original exam paper and sample paper exam 2024cbse physics sample paper 2024central board of secondary education
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Subham Kumar
Subham Kumar
Asked: December 30, 2023In: Class 10 Science

An object of height h is kept at point P in front of a mirror as shown below. The height of the image produced is h’. In the diagram, F is the focus and C is the centre of curvature. (a) If the object is now moved to point C, will the height of the image now produced be less than, equal to, or greater than h’? Give a reason for your answer. (b) If the focal length of the mirror is 20 cm and the distance between points P and C is 10 cm, determine the distance between the images produced when the object is kept at P and C.

An object of height h is kept at point P in front of a mirror as shown below. The height of the image produced is h’. In the diagram, F is the focus and C is the centre of curvature. (a) If the object is now moved to point C, will the height of the image now produced be less than, equal to, or greater than h’? Give a reason for your answer. (b) If the focal length of the mirror is 20 cm and the distance between points P and C is 10 cm, determine the distance between the images produced when the object is kept at P and C.

A curved mirror, whether concave or convex, has a focal point where parallel rays either converge (concave) or diverge (convex). This point, called the focal point, is crucial in understanding image formation and optical properties of curved mirrors.

2023-2024 cbse class 10 sample question papercbsecbse biology sample paper 2024cbse class 10 science sample question paper 2023-2024cbse original exam paper and sample paper exam 2024cbse physics sample paper 2024central board of secondary education
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Subham Kumar
Subham Kumar
Asked: December 30, 2023In: Class 10 Science

The Thermit process is used for repairing cracks in railway tracks on site. (a) Write the equation for the reaction taking place in the process, mentioning the physical states of the reactants and products. (b) What information in the chemical equation indicates that the reaction is exothermic?

Thermit process is a metallurgical reaction where a mixture of aluminum powder and a metal oxide, typically iron oxide, undergoes an exothermic reaction, producing molten metal and heat.

cbsecbse biology sample paper 2024cbse chemistry sample paper 2024cbse class 10 science sample question paper 2023-2024cbse original exam paper and sample paper exam 2024cbse physics sample paper 2024cbse sample paper 2024cbse sample paper 2024 class 10central board of secondary education
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Subham Kumar
Subham Kumar
Asked: December 30, 2023In: Class 10 Science

White light is passed through a prism to yield a spectrum. (a) The ray of which colour will show the maximum angle of deviation and which one will show the least angle of deviation? (b) A blue-coloured ray is passed through a glass prism. What will be the colour of the emergent ray? Justify your answer.

When light passes through a prism, it undergoes refraction, separating into its component colors due to varying speeds in the different wavelengths. This dispersion reveals the spectrum, showcasing distinct hues.

cbsecbse biology sample paper 2024cbse chemistry sample paper 2024cbse class 10 science sample question paper 2023-2024cbse original exam paper and sample paper exam 2024cbse physics sample paper 2024cbse sample paper 2024cbse sample paper 2024 class 10central board of secondary education
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Subham Kumar
Subham Kumar
Asked: December 30, 2023In: Class 10 Science

Oxygen, mostly, is carried by a pigment in our blood whereas carbon dioxide is transported in dissolved form in our blood. Give TWO reasons that make the above statement correct.

Oxygen in human blood is vital for cellular respiration, generating energy for body functions. It sustains life, supporting metabolic processes and ensuring organs and tissues receive the necessary oxygen for optimal functioning.

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