1
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
The angular resolution of a 10 cm diameter telescope at a wavelength of 5000 $$\mathop A\limits^ \circ $$ is of the order of
A
106 rad
B
10$$-$$2 rad
C
10$$-$$4 rad
D
10$$-$$6 rad.
2
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
The work functions for metals A, B and C are respectively 1.92 eV, 2.0 eV and 5 eV. According to Einstein's equation the metals which will emit photoelectrons for a radiation of wavelength 4100 $$\mathop A\limits^ \circ $$ is/are
A
A only
B
A and B only
C
all the three metals
D
none
3
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
A photosensitive metallic surface has work function, h$$\upsilon $$0. If photons of energy $$2h{\upsilon _0}$$ fall on this surface, the electrons come out with a maximum velocity of 4 $$ \times $$ 106 m/s. When the photon energy is increased to 5 h$$\upsilon $$0, then maximum velocity of photoelectrons will be
A
2 $$ \times $$ 107 m/s
B
2 $$ \times $$ 106 m/s
C
8 $$ \times $$ 106 m/s
D
8 $$ \times $$ 105 m/s
4
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
Two charges q1 and q2 are placed 30 cm apart, as shown in the figure. A third charge q3 is moved along the arc of a circle of radius 40 cm from C to D.

The change in the potential energy of the system is $${{{q_3}} \over {4\pi {\varepsilon _0}}}$$ where k is

AIPMT 2005 Physics - Electrostatics Question 39 English
A
8q1
B
6q1
C
8q2
D
6q2