पादपो मे पोषण L4

उबले दूध को पेट में पचने मे कितना समय लगता है

निम्न मे से किस जीव को देखने की क्षमता हमसे चार गुना अधिक होती है

बाघ अंधेरे मे हमसे कितना गुना बेहतर देख सकता है

निम्न मे प्रश्नवाचक चिन्ह की जगह कौन सी संख्या आयेगी-

A piece of wire of length 4L is bent at random, to form a rectangle. The probability that its area is at most L^2/4 is :

The combined equation of the lines L_(1) and L_(2) is 2x^(2)+6xy+y^(2)=0 and that lines L_(3) and L_(4) is 4x^(2)+18xy+y^(2)=0 . If the angle between L_(1) and L_(4) be alpha , then the angle between L_(2) and L_(3) will be

In a laboratory four convex lenses L_(1), L_(2), L_(3) and L_(4) of focal lengths 2,4,6 and 8 cm respectively are available. Two of these lenses form a telescope of length 10 cm and magnifying power 4 . The objective and eye lenses are

A rod of length L is pivoted at one end and is rotated with as uniform angular velocity in a horizontal plane. Let T_1 and T_2 be the tensions at the points L/4 and 3L/4 away from the pivoted ends.

A gas expands from 4.0 L to 4.5 L against a constant external pressure of 1 atm. The work done by the gas is (1 L-atm = 101.3 J)