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qUESTIONS

MCQs-PYQs-12th-jee

An electron enters the space between the plates of a charged parallel plate capacitor as shown in the figure. The charge density on the plate is σ. Electric intensity in the space between the plates is E. A uniform magnetic field B also exists in the space perpendicular to the direction of E. The electron moves perpendicular to both E and B without any change in direction. The time taken by the electron to travel a distance L in the space is

MCQs-PYQs-12th-jee

A homogeneous electric field E and a uniform magnetic field B are pointing in the same direction. A proton is projected with its velocity parallel to E. It will

An object of length 6 cm is placed on the principal axis of a concave mirror of focal length f at a distance of 4f. The length of the image will be

An object is kept at a distance of 60 cm from a concave mirror. For getting a magnification of 1/2, focal length of the concave mirror required is

A 2.0 cm tall object is placed 15 cm in front of a concave mirror of focal length 10 cm. What is the size and nature of the image

The graph between u and v for convex mirror is

A man having height 6 m. He observes image of 2 m height erect, then mirror used is

Under which of the following conditions will a convex mirror of focal length f produce an image that is erect, diminished and virtual

A point object is placed at a distance of 30 cm from a convex mirror of focal length 30 cm. The image will form at

A convex mirror of focal length f forms an image which is 1/n times the object. The distance of the object from the mirror is

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