150+ Physics General Knowledge Questions: Page – 7
Q126) Which alloy is used to make clock pendulums:
A) Mischmetal
B) Invar
C) Brass
D) None of the Above
Answer: B
Q127) When the red light is exposed on a yellow flower, it will appear ________ in color:
A) Yellow
B) Orange
C) Black
D) Red
Answer: D
Q128) Longitudinal waves can’t travel through:
A) Solid
B) Vacuum
C) Gas
D) None of These
Answer: B
Q129) Rose appears red in sunlight, but the same Rose appears __________ in green light:
A) Red
B) Black
C) Green
D) Yellow
Answer: B
Q130) The current flowing in one direction is called _______:
A) Alternating Current
B) Induced Current
C) Direct Current
D) Ionic Current
Answer: C
Q131) When detergent is added to water, the surface tension will:
A) Increases
B) Decreases
D) No Change
D) Become Zero
Answer: B
Q132) What is the correct formula for Angular Momentum:
A) L= r×p
B) L= r.p
C) L= p×r
D) L= p.r
Answer: A
Q133) What is the unit of measurement for the universal gravitational constant:
A) Nm/Kg²
B) Nm²/Kg
C) Nm²/Kg²
D) Nm²Kg²
Answer: C
Q134) Rockets work on the principle of:
A) Newton’s First Law
B) Newton’s Second Law
C) Newton’s Third Law
D) Archimedes Principle
Answer: C
Q135) Tesla is a unit of magnetic ________:
A) Flux
B) Induction
C) Moment
D) Field
Answer: B
Q136) Doppler’s effect is associated with:
A) Electric Current
B) Light
C) Heat
D) Sound
Answer: D
Q137) What is the unit of noise pollution:
A) Decibel
B) Decimal
C) ppm
D) Hertz
Answer: A
Q138) Temperatures in centigrade and Fahrenheit are the same at:
A) 32°
B) 40°
C) -40°
D) -273°
Answer: C
Q139) Butter paper is an example of a ______ object:
A) Transparent
B) Translucent
C) Opaque
D) Luminous
Answer: B
Q140) Which of the following is not a part of the AC generator:
A) Slip Rings
B) Coil
C) Commutator
D) Galvanometer
Answer: C
Q141) What is the measuring unit for the length of light waves:
A) Barrel
B) Angstrom
C) Knot
D) Carat
Answer: B
Q142) A magnifying glass comprises a simple:
A) Convex Lens
B) Convex Mirror
C) Concave Lens
D) None of These
Answer: A
Q143) The intensity ratio of waves is 25:9. What is the ratio of their amplitudes:
A) 5:3
B) 3:5
C) 25:9
D) 50:18
Answer: A
Q144) Plank constant has the dimensions of:
A) Energy
B) Linear Momentum
C) Angular Momentum
D) Force
Answer: A
Q145) 1 CLS unit is equals to:
A) 1.2 Times the Mass of the Sun
B) 1.3 Times the Mass of the Sun
C) 1.4 Times the Mass of the Sun
D) 1.6 Times the Mass of the Sun
Answer: C
Q146) What is the complete form of RADAR:
A) Radio Detecting and Ranging
B) Radio Device and Ranging
C) Radio Detects and Range
D) Region Device and Ranging
Answer: A
Q147) The rate of change in displacement over time is called _______:
A) Acceleration
B) Speed
C) Velocity
D) None of These
Answer: C
Q148) The _______ lens is thick at the middle and thin at the edges:
A) Concave
B) Convex
C) Bifocal
D) None of These
Answer: B
Q149) Which of the following metals has the greatest thermal and electrical conductivity:
A) Silver
B) Copper
C) Iron
D) None of These
Answer: A
Q150) The Tyndall effect is due to:
A) Scattering of Light
B) Dispersion of Light
C) Refraction of Light
D) Reflection of Light
Answer: A
Q151) Fulminology is the study of:
A) Volcanic Eruptions
B) Lightening
C) Natural Gases
D) Atmosphere
Answer: B
Q152) Which of the following statements is always true:
A) Displacement > Distance
B) Displacement < Distance
C) Displacement = Distance
D) None of These
Answer: B
Q153) The whistle of a fast-moving rail engine is heard ascending-descending when it crosses the station; it is called:
A) Peltier Effect
B) Doppler Effect
C) Ultrasonic Voice
D) Subsonic Effect
Answer: B
Q154) The velocity of sound doesn’t affect:
A) Heat
B) Medium
C) Pressure
D) Humidity
Answer: C
Q155) Curie is a unit of:
A) Current
B) Voltage
C) Luminous Intensity
D) Radioactivity
Answer: D
Q156) A diode is used for:
A) Modulation
B) Oscillation
C) Amplification
D) Rectification
Answer: D
Q157) The scientist associated with flotation is:
A) Archimedes
B) Newton
C) Louis Pasteur
D) None of These
Answer: A
Q158) The unit of Viscosity is:
A) Poise
B) Pascal
C) Poiseuille
D) None of These
Answer: C
Q159) Acceleration is inversely proportional to:
A) Force
B) Velocity
C) Mass
D) Distance
Answer: C
Q160) Which among the following waves can’t be polarized:
A) Sound
B) Radio
C) Infrared
D) Ultraviolet
Answer: A
