The area of a triangle is equal to the area of a square whose each side is 60 m. The height of a triangle is 90 m. The base of the triangle will be |
|||||||
(a) |
65 m |
(b) |
75 m |
(c) |
80 m |
(d) |
85 m |
The area of a triangle is equal to the area of a square whose each side is 60 m. The height of a triangle is 90 m. The base of the triangle will be |
|||||||
(a) |
65 m |
(b) |
75 m |
(c) |
80 m |
(d) |
85 m |
A convex lens is put 10 cm from a light source and it makes a sharp image on a screen, kept 10cm from the lens. Now a glass block (refractive index 1.5) of 1.5 cm thickness is placed in contact with the light source. To get the sharp image again, the screen is shifted by a distance d. Then d is:
a. |
0.55 cm away from the lens |
b. |
1.1 cm away from the lens |
c. |
0.55 cm towards the lens |
d. |
0 |
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