Top 1000+ Solved Physics MCQ Questions Answer
Q. Purity of a metal can be determined with the help of –
a. Pascal's law
b. Boyle's law
c. Archimedes principle
d. Conservation of mass principle
Q. If both the mass and the velocity of a body is increased to twice of their magnitude, the kinetic energy will increase by –
a. 2 times
b. 4 times
c. 8 times
d. 16 times
Q. Which phenomenon is responsible for the echo of sound wave?
a. Reflection
b. Refraction
c. Interference
d. Polarization
Q. Which of the following has the lowest frequency?
a. Visible light
b. Gamma rays
c. Xrays
d. Ultra violet rays
Q. A fresh egg when placed in salt water will –
a. sink and go to the bottom
b. sink but will not go to the bottom
c. float
d. burst
Q. Hydraulic brakes in automobile work on –
a. Poiseuille's principle
b. Pascal's principle
c. Archimedes' principle
d. Bernoulli's principle
Q. The gas used in a refrigerator is -
a. cooled down on flowing
b. heated up on flowing
c. cooled down when compressed
d. cooled down when expanded
Q. The main purpose of the spacecraft "messenger" is :
a. Orbiting the Venus
b. Orbiting the Mars
c. Mapping and investigating the Mercury
d. None of the above
Q. Light scattering takes place in –
a. Colloidal solutions
b. Acidic solutions
c. Electrolyte solutions
d. Basic solutions
Q. The term reactor referred to in waste water treatment is –
a. Vessel
b. Settling tank
c. Clarifier
d. Aeration tank
Q. Which, of the following radiations has the least wavelength?
a. X-rays
b. a-rays
c. g-rays
d. b-rays