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A room us 4 m long and 3 m 50 cm wide. How many square meters of carpet is needed to cover the floor of the room?
Length of room = 4 m and breadth of room = 3 m 50 cm = 3.50 m Area of carpet = length x breadth = 4 x 3.50 = 14m2
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Between the primary and secondary rainbows, there is a dark band known as Alexandar’s dark band. This is because
(a), (d) (a) light scattered into this region interfere destructively. (d) angle made at the eye by the scattered rays with respect to the incident light of the sun lies between approximately...
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An electric room heater draws a current of 2.4 A from the 120 V supply line. What current will this room heater draw when
Solution : In first case, I = 2.4 amp, V = 120 volt V=IR 120 = 2.4 x R R = 120/2.4 = 50 ohm In second case, V = 240 volt, R = 50 ohm V = IR 240 =...
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What can you see in a completely dark room ? If you switch on an electric bulb in this dark
When we see in a completely dark room, we are not able to see anything because there is no light in the dark room. (a) We can see bulb due to...
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If the door of a refrigerator is kept open in a room, will it make the room warm or cool?
Since a refrigerator is a heat engine that operates in the reverse direction i.e. it extracts heat from a cold body and transforms it to hot body. Since it exhaust...
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Why does it take some time to see objects in a dim room when you enter the room from bright sunshine outside ?
It takes some time to see objects in a dim room when we enter the room from bright sunshine outside because it takes some time to the small pupil of...
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A person walking in a dark corridor enters into a brightly lit room : (a) State the effect on the pupil of the eye.
(a) Pupil becomes smaller. (b) The amount of light entering the eye is reduced.
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Explain why, when it is getting dark at night, it is impossible to make out the colour of cars on the road.
The color detecting cells of the retina of the eye called ‘cones’ do not work well in dim light.
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Why does the sky appear dark (or black) to an astronaut instead of blue ?
To an astronaut, the sky looks dark and black instead of blue because there is no atmosphere containing air in the outer space to scatter sunlight. So, there is no...
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SKP Hotel offers accommodation, meals facilities. Create a class Accommodation with Room Number, type of room, and rent, etc..
class Accommodation(object): # constructor to create an object def_init_(self): self.roomno=0 self.roomtype=” self.roomrent=0.0 defgetroom(self): self.roomno=input(“Enter the Room no:”) self.roomtype=rawjnput(“Enter the Room type:’) self.roomrent=float(raw_input(“Enter Room Rent”)) class Meals(object): # Meals class def_init_(self): self.mealcode=0 self.mealname=“” self.mealprice=0.0 def getmeals(self): self.mealcode=input(“Enter the meal code:”) self.mealname=raw_input(“Enter the meal name:”) self.mealprice=float(raw_input(“Enter the meal price”)) class Customer(Accommodation,Meals): def_init_(self): super(Customer,self)._init_() self.custnum=0 self.custname=‘ ’ self.address=‘...
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