What will effect the similarity of any two polygons? (i) They are flipped horizontally
(ii)They are dilated by a scale factor
(iii)They are translated down
(iv)They are not the mirror image of one another

If two similar triangles have a scale factor of a: b . Which statement regarding the two triangles is true? (i)The ratio of their perimeters is 3a : b (ii)Their altitudes have a ratio a:b (iii)Their medians have a ratio (a)/(2):b (iv)Their angle bisectors have a ratio a^(2):b^(2)

What will be the effect of the following conditions on the rate of photosynthesis ? (i) Dry conditions (ii) Closed stomata (iii) Rainy days (iv) Sunny days (v) Good manuring

What is the sum of all interior angles of a polygon of (i) n sides (ii) 7 sides (iii) 8 sides (iv) 10 sides ?

Write the answer of each of the following questions:(i) What is the name of horizontal and the vertical lines drawn to determine the position of any point in the Cartesian plane?(ii) What is the name of each part of the plane formed by these two lines?(iii) Write the name of the point where these two lines intersect.

If the distance between two bodies is increased by a factor of 5, (i) by what factor will the gravitational force change if the masses are kept consant ? (ii) by what factor will the mass of one of them have to be altered, keeping the other mass the same, to maintain the same gravitational force between the two bodies.?

While looking at the above diagram, Nalini concluded the following- i. the image of the object will be a virtual one. ii. the reflected ray will travel along the same path as the incident ray but in opposite direction. iii. the image of the object will be inverted. iv. this is a concave mirror and hence the focal length will be negative. Which one of the above statements are correct?

In Young's double slit experiment, what is the effect on the interfernece pattern if, (i) the distance between the two slits is halved. (ii) the distance between the screen and the plane of slits is doubled. (iii) one of the slits is covered with translucent paper.