Which of the following instruments helps to maintain the ...
Which of the following instruments helps to maintain the correct humidity and temperature of a building?
A compressor
A refrigerator
Air blower
Air conditioner
Correct answer is D
Compressor is an instrument to supply air or other gas at increased pressure
Refrigerator is an appliance to keep things cold
Air blower is used to release air
Air conditioner is used to remove heat and maintain a stable temperature in an occupied space
If the refractive index of crown glass is 1.51, its critical angle is?...
When a plane mirror at which a ray is incident is rotated through an angle θ, the reflect...
What happens when a gas expands at constant temperature? ...
A ray incident on a glass prism undergoes minimum deviation when the ...
Which of the following statements are TRUE of isotopes? i. isotopes of an element have the same c...