Subject: Science, asked on 29/11/17

## THE REAR VIEV MIRROR OF A CAR IS A PLANE MIRROR A DRIVER IS REVERSING HIS CAR AT A SPEED OF 2 m\s THE DRIVER SEES IN HIS REAR VIEW MIRROR THE IMAGE OF A TRUCK PARKED BEHIND HIS CAR THE SPEED AT WHICH THE IMAGE OF THE TRUCK APPEARS TO APPROACH THE DRIVER WILL BE????

Subject: Science, asked on 23/11/17

## Solve this:

Subject: Science, asked on 19/11/17

## What can you prove by the newtons colour disk

Subject: Science, asked on 14/11/17

## Respected sir, In today's class i.e. 14 November 2017, you told that erect images are always enlarged, but the image formed by plane mirror and convex mirror are of the same size and diminished respectively. So can you clear this doubt. Thanks and regards, SaloniDhingra

Subject: Science, asked on 10/11/17

## Write difference between real and virtual image in tabular form.

Subject: Science, asked on 10/11/17

## Write the nature of the image formed by convex lens when the object is between F and 2F ( where F is the focal length of the lens).

Subject: Science, asked on 10/11/17

## Ans20

Subject: Science, asked on 9/11/17

## Ans2 20  ​Four light bulbs are concealed from an observer by an opaque wall as shown. Without shifting the positions of the observer and the bulbs, how many bulbs can the observer see from the mirror ? A.  ​1                                                   B.  ​2 C.  ​3                                                   D.  ​4

Subject: Science, asked on 8/11/17

## Ans 15

Subject: Science, asked on 30/10/17

## Rainbow is produced when sunlight falls on drops of rain .whixh of the following physical phenomena is/are responsible : A}diffusion B}dispersion and total internal reflection

Subject: Science, asked on 10/10/17

## Is it necessary for the Newton's disc to be rotated very fast. Will it appear white even if it is rotated very slowly?

Subject: Science, asked on 5/10/17

## Q 14 please as fast as possible

Subject: Science, asked on 26/9/17

## what is principal focus?

Subject: Science, asked on 13/9/17

## What is the full form of ACF???

Subject: Science, asked on 7/9/17

## Name three practical devices based on the heating effect of current.

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