Mindblown: a blog about philosophy.

1. The dimensions of fall of potential per unit distance are given by : (A) [MLT-3A-1] (B) [ML2T-2A-1] (C) [ML2T-2A-3] (D) [MLT-2A-2] 2. Which of the following is blocked by a capacitor ? (A) A.C. (B) D.C. (C) Both A.C. and D.C. (D) Neither A.C. nor D.C. 3. Two copper spheres of the same radius,…

1. Which one of the following is the unit of electric field ? (A) Coulomb (B) Newton (C) Volt (D) N/C 2. If an electric dipole is kept in a uniform electric field then resultant electric force on it is : (A) always zero (B) never zero (C) depend upon capacity of dipole (D) None…

1. Who undertook the first space walk and in which year ? (A) Leonov, 1965 (B) Neil Armstrong, 1969 (C) Rakesh Sharma, 1998 (D) None of these 2. The term used “to collect the information about an object and a place without physical contact” is called : (A) modulation (B) communication (C) amplification (D) remote…

1. Bonds in a semiconductor : (A) trivalent (B) covalent (C) bivalent (D) monovalent 2. Number of electrons in the valence shell of a semiconductor is : (A) 1 (B) 2 (C) 3 (D) 4 3. Semiconductors of both p-type and n-type are produced by : (A) ionic solids (B) covalent solids (C) metallic solids…

1. How many electrons are contained in 23892U nucleus ? (A) 92 (B) 146 (C) 238 (D) O 2. Chadwick was awarded the Nobel prize in Physics in 1935 for his discovery of : (A) electron (B) proton (C) neutron (D) None of these 3. The density of a nucleus is of the order of:…

1. Who explained the splitting of special lines in magnetic field ? (A) Zeeman (B) Bohr (C) Summerfield (D) Einstein 2. The mass of a neutron is : (A) 1.00866 u (B) 1.0866 u (C) 1.866 u (D) 0.1866 u 3. Isobars have the same : (A) A (B) Z (C) N (D) All the…

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)…