An observer shoots parallel to a meter stick at very high (relativistic) speed and finds that the length of the meter stick is September 17, 2025 by Admin A. Greater than one meter B. Less than one meter C. One meter D. A foolish question ✅ The correct answer is option B.
The rectangular coordinate system is also called September 17, 2025 by Admin A. Polar coordinate system B. Cartesian coordinate system C. Cylindrical coordinate system D. Spherical coordinate system ✅ The correct answer is option B.
0.001 kg mass will be equivalent to September 17, 2025 by Admin A. 2.50 GWh B. 25.00 GWh C. 0.26 GWh D. 250 GWh ✅ The correct answer is option B.
The direction of a vector in space is specified by September 17, 2025 by Admin A. One angle B. Two angle C. Three angle D. No angle ✅ The correct answer is option C.
Which one of the following radiations has the strongest photon? September 17, 2025 by Admin A. T.V waves B. Microwaves C. X-rays D. γ-rays ✅ The correct answer is option D.
Addition of vector obeys September 17, 2025 by Admin A. Commutative law B. Distributive law C. Associative law D. All given laws in A, B and C ✅ The correct answer is option D.
Which of the following substances possess the highest elasticity? September 17, 2025 by Admin A. Rubber B. Steel C. Glass D. Copper ✅ The correct answer is option B.
The linear momentum of a photon is September 17, 2025 by Admin A. Zero B. Hv/c2 C. Hv/c D. c2/hv ✅ The correct answer is option A.
A vector can be multiplied by a number. The number may be September 17, 2025 by Admin A. Dimensionless B. Dimensional scalar C. Negative D. All A, B and C are correct ✅ The correct answer is option D.
What is the SI unit of the modulus of elasticity of substance? September 17, 2025 by Admin A. Nm-2 B. Jm-2 C. Nm-1 D. Being a number it has no unit ✅ The correct answer is option A.