Mindblown: a blog about philosophy.

1. De-Broglie equation states the : (A) dual nature (B) particle nature (C) wave nature (D) none of these 2. Protons and alpha particles have the same de-Broglie wavelength. What is same for both of them ? (A) Energy (B) Time period (C) Frequency (D) Momentum 3. Kinetic energy of emitted electrons depends upon :…

1. Poisson’s bright spot was discovered by: (A) Fresnel (B) Rayleigh (C) Poisson (D) Fraunhoffer 2. The theory of expanding universe is confirmed by the observation of the spectral lines of the star, which shows : (A) green shift (B) red shift (C) violet shift (D) yellow shift 3. The application of Doppler effect are…

1. Which of the following is not a property of light ? (A) It can travel through vacuum (B) It has a finite speed (C) It involve transportation energy (D) It requires a material medium for its propagation 2. Two points P and Q are situated at the same distance from a source of light…

1. The dimensional formula of E is : (A) [MLT-2A-1] (B) [MLT-3A-1] (C) [MLT-2A-2] (D) None of these 2. Which of the following has the dimensions of current ? 3. Which of the following has the dimensions of charge ? 4. Maxwell’s equation involving is obtained from : (A) Ampere’s law (B) Gauss’s law (C)…

1. Power factor of an ac circuit is a measure of: (A) virtual power (B) power lost in the circuit (C) mean power (D) all the above 2. The dimensional formula of L/R is similar to that of: (A) frequency (B) time (C) length (D) none of these 3. Which of the following has dimensions…

1. Which of the following is not equal to a henry ? 2. 1 henry is equal to : (A) weber/ampere (B) weber/volt (C) weber ampere (D) None of these 3. The magnetic field is parallel to a surface, then the magnetic flux through the surface is : (A) zero (B) small but not zero…

1. Which of the following has a low value in ferrites ? (A) Conductivity (B) Permeability (C) Magnetic susceptibility (D) All the above 2. The dimensional representation of magnetic flux density is ; (A) [MLT-2] (B) [MLT-2A-1] (C) [MLT-2A-2] (D) [MT-2A-1] 3. Tangent law is applicable only when : (A) two uniform and mutually perpendicular…