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7 months agoNew answer posted
7 months agoContributor-Level 10
Doppler Effect in class 11 chapter 14 waves refers to the variation in the wavelength or frequency of a wave in relation to an observer moving relative to the wave source. When the wave source moves toward the observer, the frequency increases, and waves are compressed. If the source moves away, the frequency reduces and the waves are stretched. The Doppler Effect can be observed with the sound of a passing train or ambulance. This concept is also used in medical imaging technologies like Doppler ultrasound, radar, and astronomy to find whether galaxies or stars are moving away or towards the Earth.
New answer posted
7 months agoContributor-Level 10
The speed of a wave can be found by the medium properties through which it travels. For mechanical waves, the speed of the wave depends on the inertia and elasticity of the medium. For example, the speed of a wave is dependent on the mass of the wave per unit length and the tension in the string.
Also, sound travels in solids at a greater speed than in liquids and gases because, in a solid, the particles are more tightly packed. In the case of electromagnetic waves, the speed of waves is the highest in vacuum and it depends on the magnetic and electric properties of the medium. The type of wave also matters which can be longitudin
New answer posted
7 months agoContributor-Level 10
The last five years' NEET UG papers (from 2020-2024) are available under the "NEET Archives" at the official website of the NTA which can be downloaded as PDF for free. Coaching institutes like Allen and Aakash also provide compiled papers with solutions either on their websites or apps, sometimes requiring registration.
NEET 2025 syllabus is going to be based on NCERT syllabus, which covers Physics (Mechanics, Electrodynamics, etc.), Chemistry (organic, inorganic, physical), and Biology (Botany, Zoology) classes 11 and 12. As per the announcements, no changes would come in the 2025 syllabus, though one can always check NTA update
New answer posted
7 months agoBeginner-Level 2
No, you cannot get admission for BHMS at Khalsa College Amritsar without NEET. NEET is necessary to get BHMS in any collage.
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