Option “1” is correct. In general, a uniformly accelerated motion is the one in which the acceleration of the particle throughout the motion is uniform. The motion of a freely falling body is an example of Uniformly accelerated motion.
413. The temperature at which a solid melts to become a liquid at the atmospheric pressure is called its ___________.
1. Crystallisation
2. Melting point
3. Evaporation
4. Galvanisation
Option “2” is correct. The Melting point of a solid is the temperature at which it changes state from solid to liquid at atmospheric pressure.
414. For an object, the state of rest is considered to be the state of ______ speed.
1. Increasing
2. Decreasing
3. Inverse
4. Zero
Option “4” is correct. For an object, the state of rest is considered to be the state of zero speed.
415. The term ‘Higgs Boson’ is associated with –
1. Nano Technology
2. Oncology
3. God Particle
4. Stem Cell Research
Option “3” is correct. The term ‘Higgs Boson’ is associated with God particle.
416. Which term is not associated with sound wave?
1. Hertz
2. Decibel
3. Candela
4. Mach
Option “3” is correct. Candela is not related to sound. It is unit of light intensity.
417. Which one among the following is not an x?
1. X-Ray
2. Radio waves
3. Cathode Ray
4. Infrared Ray
Option “3” is correct. Electromagnetic radiation refers to the waves of the electromagnetic field, propagating through space-time, carrying electromagnetic radiant energy. It includes radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.
418. Physical quantities, which have _______ only and no _______ are called scalar quantities.
Option “2” is correct. A scalar quantity is a one dimensional measurement of a quantity, like temperature, or weight, it has only magnitude and no direction.
419. Which among the following is a vector quantity?
1. Heat
2. Angular momentum
3. Work
4. Time
Option “2” is correct. Angular momentum is a vector quantity.
420. Who Invented water turbine?
1. Enrico Fermi
2. Adolf Gaston Eugen Fick
3. Sandford Fleming
4. Benoit Fourneyron
Option “4” is correct. Benoit Fourneyron is the Inventor of Water Turbine.
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What is a science
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