411. The reflection formed by the plane mirror is ________________.

1. Vertical inversion
2. A real image
3. Lateral inversion
4. An Enlarged image

Option “3” is correct.
The reflection formed by the plane mirror is Lateral inversion.
412. The motion of a freely falling body is an example of ________________________ motion.

1. Uniformly accelerated
2. Non-uniformly accelerated
3. Constant velocity
4. Constant speed

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.

1. Direction, magnitude
2. Magnitude, direction
3. Speed, velocity
4. Velocity, speed

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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