The maximum displacement of a particle from mean position in SHM is called MCQ with Answer and Explanation

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The maximum displacement of a particle from mean position in SHM is called

A. Frequency

B. Time period

C. Wavelength

D. Amplitude

Answer: Option D

Solution (By JKSSB Mock Tests)

Amplitude is max displacement.

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Question #1

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Beta rays consist of:

A. High-speed electrons

B. Neutrons

C. Electromagnetic waves

D. Helium nuclei

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Correct Answer: Option A

Explanation:
Beta (β) rays are streams of high-speed electrons (β⁻) or positrons (β⁺) emitted during radioactive decay. Beta-minus decay: neutron → proton + electron + antineutrino. Alpha rays are helium nuclei (²He⁴); gamma rays are high-energy photons; neutrons are neutral particles. Memory tip: 'Beta = electrons; Alpha = He nucleus; Gamma = photons'. This classification question tests knowledge of radioactivity types, crucial for modern physics in competitive exams. Always distinguish penetration power: alpha < beta < gamma.

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Question #2

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Refrigerator COP = Q₂/W. If Q₂=300J, W=100J, COP is:

A. 200

B. 0.33

C. 400

D. 3

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Correct Answer: Option D

Explanation:
COP = desired output/work input = 300/100 = 3. Typical COP > 1 for refrigerators. Memory aid: 'COP = cooling effect per work; higher = more efficient'. Thermodynamics calculation frequently tested in competitive exams.

This question belongs to: Science Physics