Top 1000+ Solved Physics MCQ Questions Answer
Q. The boiling point of water decreases at higher altitudes is due to –
a. low temperature
b. low atmospheric pressure
c. high temperature
d. high atmospheric pressure
Q. The reactivity of an ionic compound element is explained as its tendency to attain noble gas configuration. How do the elements do so?
a. Lose electrons
b. Gain electrons
c. Both are correct
d. Both are incorrect
Q. A water tank appears shallower when it is viewed from top due to –
a. rectilinear propagation of light
b. reflection
c. total internal reflection
d. refraction
Q. For a ray of light to suffer total internal reflection it has to pass from –
a. glass to water
b. water to glass
c. air to water
d. air to glass
Q. For which of the following substances, the resistance decreases with increase in temperature?
a. Pure silicon
b. Copper
c. Nichrome
d. Platinum
Q. A solid needle placed horizon-tally on the surface of the water floats due to –
a. capillary action
b. water pressure
c. surface tension of water
d. viscosity of water
Q. The first equation of motion gives the relation between :
a. Position and time
b. Position and Velocity
c. Velocity and time
d. Velocity and acceleration
Q. The intensity ratio of waves is 25:9. What is the ratio of their amplitudes?
a. 50 : 18
b. 25 : 9
c. 3 : 5
d. 5 : 3
Q. Which of these travels in glass with minimum velocity?
a. red light
b. violet light
c. green light
d. yellow light
Q. The phenomenon which causes mirage is –
a. Interference
b. Diffraction
c. Polarisation
d. Total internal reflection
Q. Which of the following is indicated by the colour of a star?
a. weight
b. distance
c. temperature
d. size
Q. For which one of the following, 'Diodes' are generally used for?
a. Rectification
b. Amplification
c. Modulation
d. Filtration