1
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
A square surface of side L metres is in the plane of the paper. A uniform electric field $$\overrightarrow E $$ (volt/m), also in the plane of the paper is limited only to the lower half of the square surface (see figure). The electric flux in SI inits associated with the surface is

AIPMT 2006 Physics - Electrostatics Question 38 English
A
EL2
B
EL2/2$$\varepsilon $$0
C
EL2/2
D
zero
2
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
A microscope is focussed on a mark on a piece of paper and then a slab of glass of thickness 3 cm and refractive index 1.5 is placed over the mark. How should the microscope be moved to get the mark in focus again ?
A
2 cm upward
B
1 cm upward
C
4.5 cm downward
D
1 cm downward
3
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
A convex lens and a concave lens, each having same focal length of 25 cm, are put in contact to form a combination of lenses. The power in diopters of the combination is
A
zero
B
25
C
50
D
infinite.
4
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
When photons of energy h$$\upsilon $$ fall on an aluminimum plate (of work function E0), photoelectrons of maximum kinetic energy K are ejected. If the frequency of radiation is doubled, the maximum kinetic energy of the ejected photoelectrons will be
A
K + h$$\upsilon $$
B
K + E0
C
2K
D
K.
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