Question
Explain the meaning of greenhouse effect.
✓
Answer
The phenomenon of the trapping of infrared radiations of long wave length being radiated to space by greenhouse gases like carbon dioxide $\left( CO _2\right)$, methane $\left( CH _4\right)$, nitrous oxide $\left( N _2 O \right)$ to keep the environment warm at the planet's surface and the lower atmosphere is called greenhouse effect.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
What is the difference between static and dynamic equilibrium?
In following figure , a ray of light PA is incident normally on the hypotenuse of an isoceles right angle prism ABC. (a) Complete the path of the ray PQ till it emerges from the prism. Mark in the diagram the angle wherever necessary. (b) what is the angle of deviation of the ray PQ? (c) Name a device in which this action is used.
Two resistors having resistance 4𝛀 and 6𝛀 are connected in parallel. Find their equivalent resistance.
Write the approximate mass of a proton, neutron and electron in a.m.u.
Write two differences between transverse and longitudinal waves.
Find the position and magnification of the image of an object placed at distance of 8.0 cm in front of a convex lens of focal length 10.0 cm. Is the image erect or inverted?
The following diagram shows an object $A B$ and a converging lens $L$ with foci $F_1$ and $F_2$.
Draw two rays from the object and complete the diagram to locate the position of the image. Mark the image $C D$. Clearly mark on the diagram the position of the eye from where the image can be viewed.
→Draw two rays from the object and complete the diagram to locate the position of the image. Mark the image $C D$. Clearly mark on the diagram the position of the eye from where the image can be viewed.
Mention two properties of a wave, one property which varies and the other which remains constant when the wave passes from one medium to another.
Name musical instrument, one in each case, which produces its notes by using the following. In each case state the method used to produce notes of different pitches and loudness.
(a) A vibrating string.
(b) A vibrating column air.
(c) Vibration of any other body.
(a) A vibrating string.
(b) A vibrating column air.
(c) Vibration of any other body.
The diagram alongside shows a lens as a combination of a glass block and two prisms.
(i) Name the lens formed by the combination.
(ii) what is the line XX’ called?
(iii) Complete the path of the incident ray AB after passing through the lens.
(iv) The final emergent ray either meets XX’ at a point or appears to come from a point on XX’ Label it as F. what is this point called?
(i) Name the lens formed by the combination.
(ii) what is the line XX’ called?
(iii) Complete the path of the incident ray AB after passing through the lens.
(iv) The final emergent ray either meets XX’ at a point or appears to come from a point on XX’ Label it as F. what is this point called?