150+ Physics General Knowledge Questions: Page – 6
Q101) _______________ waves are used in echocardiography:
A) Ultrasonic
B) Infrasonic
C) Between 20 to 2000 hz
D) None of These
Answer: A
Q102) What is the frequency of direct current:
A) 50 Hz
B) 60 Hz
C) Zero
D) Infinite
Answer: C
Q103) The value of acceleration due to gravity at the equator will _______ when the earth stops rotating:
A) Increase
B) Decrease
C) Become Zero
D) Remains Same
Answer: A
Q104) Which of the following is used in the oven:
A) X-Rays
B) UV Rays
C) Microwaves
D) Radio Waves
Answer: C
Q105) Who enunciated the laws of planetary motion:
A) Nicolaus Copernicus
B) Johannes Kepler
C) Issac Newton
D) Galileo
Answer: B
Q106) Which of the following diodes is most commonly used as a voltage regulator:
A) LED
B) Zener Diode
C) Var actor Diode
D) Tunnel Diode
Answer: B
Q107) Gamma rays can cause:
A) Gene Mutation
B) Sneezing
C) Burning
D) Fever
Answer: A
Q108) Hydraulic machines work on the principle of:
A) Newton’s Law
B) Joule’s Law
C) Pascal’s Law
D) Flotation Law
Answer: C
Q109) Name the commercial unit of electric energy:
A) Kwh
B) Ampere
C) Volt
D) Ohm
Answer: A
Q110) One calorie is equal to:
A) 1.284J
B) 4.186J
C) 6.418J
D) 8.146J
Answer: B
Q111) What is the refractive index of a diamond:
A) 1.44
B) 1.47
C) 1.77
D) 2.42
Answer: D
Q112) The upward force on a floating body is called ______:
A) Jerk
B) Buoyancy
C) Archimedal Force
D) Anti Gravity
Answer: B
Q113) Which colour is formed when Yellow and Cyan are mixed:
A) Red
B) Green
C) Blue
D) White
Answer: B
Q114) _____ are used in RADAR systems:
A) Ultraviolet
B) Infrared
C) Radio Waves
D) All of These
Answer: C
Q115) 10⁴ Fermi is equal to:
A) 1 Meter
B) 100 Micron
C) 1 Angstrom
D) 0.1 Angstrom
Answer: C
Q116) The force acting on a body is always parallel to:
A) Velocity
B) Acceleration
C) Momentum
D) None of the Above
Answer: B
Q117) A body whose momentum is a constant must have a constant:
A) Acceleration
B) Force
C) Velocity
D) None of These
Answer: C
Q118) The motion of a bicycle wheel is:
A) Translatory
B) Rotary
C) Both A and B
D) Curvilinear
Answer: C
Q119) Force × time = _________:
A) Momentum
B) Impulse
C) Force
D) None of These
Answer: B
Q120) Inertia is proportional to:
A) Mass
B) Weight
C) Length
D) Height
Answer: A
Q121) The dimensional formula of the Planck’s constant is:
A) [ML2T-2]
B) [MLT]
C) [M2L2T3]
D) [ML2T-1]
Answer: D
Q122) Light cannot be polarized by:
A) Reflection
B) Diffraction
C) Refraction
D) All of These
Answer: B
Q123) Total internal reflection would takes place if:
light passes:
A) From Air to Water
B) From Water to Glass
C) From Glass to Diamond
D) From Glass to Water
Answer: D
Q124) If the length of a pendulum is doubled and the diameter of its ball is reduced to half, it’s time period will be:
A) √2
B) Half
C) Remains Same
D) Double
Answer: A
Q125) A particle is thrown upwards at a speed of 39.2 m/s. Calculate it’s time for maximum height:
A) 3 Sec
B) 4 Sec
C) 5 Sec
D) 6 Sec
Answer: B
