Question
A concave lens has a focal length 15 cm. If the object
is placed at 30 cm from the lens, what is the image distance?Solution
focal length f = -15 cm Distance of object u = -30 cm 1/ v = 1/f +1/u substituting these values in the lens equation we get, 1/v =1/-15 +1/-30 1/v =-3/30 v = -10cm Hence, the distance of the object from the lens is 10 cm and the negative sign signifies a virtual image.
Select the correct combination of mathematical signs to sequentially replace the * signs and balance the given equation.
88 * 44 * 22 * 66 * 99 * 251
Statement:
Some P are Q
Some R are S
No Q is R
Conclusion:
I. Some S are P
II. No P is S
...Find the ODD one out from the given options.
If all the persons are arranged alphabetical order in Row 2, from the left end to the right end, then how many persons remain unchanged from their previ...
Which among the following words cannot be formed using the letters of the given word only once?
INTEGRAL
Select the letter cluster from among the given options that can replace the question mark (?) in the following series.
IDF, NIK, ?, UPR, WRT, XSU
Read the directions carefully and answer the following questions.
Samson, Gill, Bumrah, Pant, Shami, Rohit and Siraj are of different weights. ...
In which direction is point D with respect to point H?
How many triangles are there in the given figure?
In the question below some statements are given followed by three conclusions I, II and III. You have to take the given statements to be true even if t...
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