Free Access to ICSE Class 10 Physics Half Yearly Sample Paper 2025 Available in PDF Format for Download
In this article, we delve into a diverse range of physics concepts, providing insights into everything from three-pin plugs to light refraction.
Three-Pin Plugs
The three-pin plug, a common household item, is designed with practicality in mind. The earth pin, longer and thicker than the other two, ensures a good electrical contact with the ground. To prevent bending or breaking when inserted into the socket, the pins are split at the ends.
Resistance and Light Waves
A bulb with a potential difference of 12V and a current of 2A offers a resistance of 6 Ω. Meanwhile, if a light wave travels at 250 m/s with a wavelength of 0.5m, its frequency will be 500Hz.
Light Refraction and Colour
The phenomenon of 'splitting of white light' occurs when white light passes through a glass prism due to the refraction of light at different angles. This is not visible in a glass block as the angles of refraction are too small to be noticeable. Interestingly, red, being longer in wavelength, scatters more than other colours.
Electric Circuits and Lenses
In an electric circuit, a fuse is connected to the live wire (positive terminal) to protect the circuit from excessive current. The principle on which the fuse works is melting when the current exceeds a certain limit. In optics, when a portion of a convex lens is wrapped in black paper, the formation of the image will be obscured or not visible.
Pulley Systems and Levers
A pulley system or V.R. 4 is used to lift a load of 175 kgf through a vertical height of 15 m with an effort of 50 kgf in the downward direction. However, the distance moved by the effort, work done by the effort, mechanical advantage (M.A.) of the pulley system, and efficiency of the pulley system are not specified in the given information.
Similarly, the length of a Class I lever is 2m, and the mechanical advantage of the lever if the fulcrum is at a distance of 40 cm from the effort point is 1.25. The M.A. (Mass Average) of a given gadget cannot be determined from the provided information.
Transformers and Waves
The core of a transformer is made of soft iron to reduce its magnetic losses. It is laminated to further reduce the eddy current losses. In the realm of waves, the frequency of light waves remains constant when refracted from air to glycerin. Direction, wavelength, and speed change, but frequency stays the same during refraction.
Acoustic Waves and Sound
The speed with which a sound travels is [calculation required]. Two differences between the waveform of a musical sound and noise are that the waveform of a musical sound is regular and periodic, while the waveform of noise is irregular and aperiodic. The waveform of a musical sound has a clear and distinct pattern, while the waveform of noise has a chaotic and disorganized pattern.
Optics and Electrical Circuits
The combination of lenses with powers +1.5D, +2.5D, and -1.0D will behave like a lens with a power of [calculation required]. In an electric circuit, the voltage drop when current is flowing is [calculation required]. The voltage on the secondary circuit of an ideal transformer with a primary voltage of 10V and a primary circuit with 4 turns and a secondary circuit with 8 turns is 5V.
Sample Papers and Superconductors
The ICSE Class 10 Physics Half Yearly Sample Paper for 2025 is designed to resemble the actual exam. In the realm of materials, Platinum has a greater resistivity than Gold, and in superconductors, the conductivity of the material becomes zero.
Miscellaneous Concepts
In superconductors, the conductivity of the material becomes zero. Linear magnification produced by a concave lens is not equal to 1 or 2. The ray should be replaced with a ray of shorter wavelength for the ray to undergo Total Internal Reflection. A listener between the above sound and another sound travelling at the same speed, but of wavelength 2.6 m would hear a [higher /lower /different] pitch. The function of a split ring in a commutator is to reverse the direction of the current. Statement A: A metre of platinum wire will have a greater resistance than a metre of gold wire. The potential difference across the 4.0 ohm resistor is [calculation required]. The critical angle of the material of the prism for blue colour is [calculation required]. The angle of the prism (A) is [not given in the question]. The waveform of a musical sound represents a [regular /irregular] pattern of vibrations. In a block and tackle system, the efficiency of the system [decreases /is unaffected] if the weight of the lower block is decreased. When a portion of a convex lens is wrapped in black paper, the formation of the image will be [obscured /blocked /not visible]. When using a biconvex lens as a magnifying glass, the object should be placed at a distance greater than the focal length of the lens. When a ray of light passes from medium B to C, the bending of light is least. The M.A. (Mass Average) of the given gadget cannot be determined from the provided information.
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