Prism minimum deviation depends on: MCQ with Answer and Explanation

Prism minimum deviation depends on:
A. Both angle and n
B. Wavelength only
C. Prism angle only
D. Refractive index only
Answer: Option A
Solution (By JKSSB Mock Tests)
Formula: n = sin[(A+δ_m)/2]/sin(A/2). δ_m depends on prism angle A and refractive index n. Memory tip: 'δ_m increases with A and n; used to measure n'. Optics formula frequently tested in competitive exams.

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Practice More Physics Questions

Question #1
Two slabs of equal thickness and cross-sectional area have thermal conductivities K1 and K2. If they are joined in series, the equivalent thermal conductivity of the combination is:
A. K1 * K2 / (K1 + K2)
B. (K1 + K2) / 2
C. 2K1 * K2 / (K1 + K2)
D. sqrt(K1^2 + K2^2)

Correct Answer: Option C


Explanation:
For slabs in series, the rate of heat flow (H) is the same. Total resistance R_eq = R1 + R2. Since thermal resistance R = L / (KA), and total length is 2L: (2L) / (K_eq * A) = (L / K1A) + (L / K2A). Canceling L/A yields 2/K_eq = 1/K1 + 1/K2. Solving gives K_eq = 2K1K2 / (K1 + K2).

This question belongs to: Science Physics
Question #2
Enrico Fermi is most famously recognized for his pioneering achievement in building the world's first:
A. Nuclear Reactor
B. X-ray machine
C. Particle Accelerator (Cyclotron)
D. Atomic Bomb

Correct Answer: Option A


Explanation:
Enrico Fermi led the team that constructed 'Chicago Pile-1', which achieved the world's first artificial, self-sustaining nuclear chain reaction on December 2, 1942. This was the first nuclear reactor. While he worked on the Manhattan Project (atomic bomb), his crowning individual distinction is creating the first controlled reactor.

This question belongs to: Science Physics
Question #3
The transfer of heat by the actual movement of particles is
A. Convection
B. Absorption
C. Radiation
D. Conduction

Correct Answer: Option A


Explanation:
Convection involves bulk movement of fluid particles (liquid/gas). Conduction: vibration transfer without particle movement. Radiation: EM waves. Absorption is taking in heat.

This question belongs to: Science Physics