Vehicles use ________ to see the objects coming from behind. Concave mirror Convex lens Convex mirror Concave lens TRUE ANSWER : ? YOUR ANSWER : ?
A person is hurt on kicking a stone due to Inertia Reaction Velocity Momentum TRUE ANSWER : ? YOUR ANSWER : ?
The potential difference between the terminals of an electric heater is 60 V when it draws a current of 4 A from the source. What current will the heater draw if the potential difference is increased to 127.5 V ? 24 A 8.5 A 0.41666666666667 TRUE ANSWER : ? YOUR ANSWER : ?
The earth is a Bad absorber and bad radiator of heat Good reflector of heat Good absorber and good radiator of heat Non-absorber of heat TRUE ANSWER : ? YOUR ANSWER : ?
If an object is thrown upwards, what will be its velocity, when it reaches its maximum height? 14.7 m/s 20 m/s 4.9 m/s 0 m/s TRUE ANSWER : ? YOUR ANSWER : ?
Sources of geothermal power are Earth's heat Both A & B None of these Water TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following laws validates the statement that matter can neither be created nor destroyed ? Law of osmosis Le Chatelier's Principle Law of conservation of mass Law of conservation of energy TRUE ANSWER : ? YOUR ANSWER : ?
The sudden fall of atmospheric pressure indicates Fair weather Rain Cold weather Storm TRUE ANSWER : ? YOUR ANSWER : ?
The phenomenon which causes mirage is Total internal reflection Interference Diffraction Polarisation TRUE ANSWER : ? YOUR ANSWER : ?
The term ''Isoneph' indicates the lines of equal Pressure Salinity Cloudiness Rainfall TRUE ANSWER : ? YOUR ANSWER : ?