CBSE Class 12


"Sweet potato tubers and potato tubers are the result of convergent evolution." Justify the statement [CBSE Class 12 Biology] (2)
Calculate the volume [CBSE Class 12 Chemistry] (2)
A concave mirror of small aperture forms a sharper image. Why? [CBSE Class 12 Physics] (1)
Suppose while sitting in a parked car [CBSE Class 12 Physics] (2)
When monochromatic light travels from a rarer to a denser medium, explain the following, giving reasons [CBSE Class 12 Physics] (2)
You have learnt that plane and convex mirrors produce virtual images of objects. Can they produce real images under some circumstances? Explain [CBSE Class 12 Physics] (2)
The image obtained with a convex lens is erect [CBSE Class 12 Physics] (2)
A convex lens of focal length 30 cm is placed coaxially with a convex mirror of radius of curvature 20 cm [CBSE Class 12 Physics] (2)
Figure shows an equiconvex lens [CBSE Class 12 Physics] (2)
A screen is placed 90 cm from an object [CBSE Class 12 Physics] (2)
The near vision of an average person is 25 cm [CBSE Class 12 Physics] (2)
You are given prisms made of crown glass and flint glass with a wide variety of angles [CBSE Class 12 Physics] (2)
A man with normal near point (25 cm) reads a book with small print using a magnifying glass [CBSE Class 12 Physics] (2)
A small telescope has an objective lens of focal length 140 cm [CBSE Class 12 Physics] (2)
An astronomical telescope uses two lenses of power 10 D and ID. What is its magnifying power in normal adjustment? [CBSE Class 12 Physics] (1)
The objective of an astronomical telescope [CBSE Class 12 Physics] (2)
How is the working of telescope different [CBSE Class 12 Physics] (2)
Calculate the value of R in the balance condition of the Wheatstone bridge [CBSE Class 12 Physics] (2)
Write two possible causes for one sided deflection in a potentiometer experiment [CBSE Class 12 Physics] (1)
Why are the connections between the resistors in a meter bridge made of thick copper strips? [CBSE Class 12 Physics] (2)
Determine the current in each branch of the following network [CBSE Class 12 Physics] (2)
AB is a potentiometer wire as shown in figure [CBSE Class 12 Physics] (2)
In the meter bridge experiment, the balance point [CBSE Class 12 Physics] (2)
Six lead-acid type of secondary cells each of emf 2 V [CBSE Class 12 Physics] (2)
Write any two factors on which internal resistance of a cell depends [CBSE Class 12 Physics] (2)
First a set of n equal resistors of R [CBSE Class 12 Physics] (2)
When is more power delivered to a light bulb [CBSE Class 12 Physics] (2)
Power P is to be delivered to a device via transmission cables [CBSE Class 12 Physics] (2)
Write two characteristics of manganin which make it suitable for making standard resistances [CBSE Class 12 Physics] (1)
Two conductors are made of the same material [CBSE Class 12 Physics] (2)