EASY
10th CBSE
IMPORTANT
Earn 100
The diagram shows a dish antenna which is used to receive television signals from a satellite. The antenna (signal detector) is fixed in front of the curved dish.
Should it be concave or convex?
Important Questions on Reflection of Light
HARD
10th CBSE
IMPORTANT
The diagram shows a dish antenna which is used to receive television signals from a satellite. The antenna (signal detector) is fixed in front of the curved dish the curved dish.
Where should the antenna be positioned to receive the strongest possible signals?
HARD
10th CBSE
IMPORTANT
The diagram shows a dish antenna which is used to receive television signals from a satellite. The antenna (signal detector) is fixed in front of the curved dish the curved dish.
Explain what change you would expect in the signals if a larger dish was used.
EASY
10th CBSE
IMPORTANT
A man standing in front of a special mirror finds his image having a very small head, a fat body and legs of normal size. What is the shape of top part of the mirror?
EASY
10th CBSE
IMPORTANT
A man standing in front of a special mirror finds his image having a very small head, a fat body and legs of normal size. What is the shape of middle part of the mirror? Give reasons for your choice.
EASY
10th CBSE
IMPORTANT
A man standing in front of a special mirror finds his image having a very small head, a fat body and legs of normal size. What is the shape of bottom part of the mirror? Give reasons for your choice.
HARD
10th CBSE
IMPORTANT
Two big mirrors A and B are fitted side by side on a wall. A man is standing at such a distance from the wall that he can see the erect image of his face in both the mirrors. When the man starts walking towards the mirrors, he finds that the size of his face in mirror A goes on increasing but that in mirror B remains the same.
EASY
10th CBSE
IMPORTANT
An object is kept at a distance of in front of a convex mirror of focal length . Calculate the position and magnification of the image and state its nature.
EASY
10th CBSE
IMPORTANT
An object is placed at a distance of from a convex mirror of focal length. Draw a ray-diagram showing the formation of image.
