1
AIPMT 2002
MCQ (Single Correct Answer)
+4
-1
Which of the following is not the property of cathode rays ?
A
In produces heating effect
B
It does not deflect in electric field
C
It casts shadow
D
It produces fluorscence.
2
AIPMT 2002
MCQ (Single Correct Answer)
+4
-1
A bulb is located on a wall. Its image is to be obtained on a parallel wall with the help of convex lens. The lens is placed at a distance d ahead of second wall, then required focal length will be
A
only $${d \over 4}$$
B
only $${d \over 2}$$
C
more than $${d \over 4}$$ but less than $${d \over 2}$$
D
less than $${d \over 4}$$
3
AIPMT 2002
MCQ (Single Correct Answer)
+4
-1
Diameter of human eye lens is 2 mm. What will be the minimum distance between two points to resolve them, which are situated at a distance of 50 meter from eye. The wavelength of light is 5000 $$\mathop A\limits^ \circ $$
A
2.32 m
B
4.28 mm
C
1.25 cm
D
12.48 cm
4
AIPMT 2002
MCQ (Single Correct Answer)
+4
-1
A charge q moves in a region where electric field and magnetic field both exist, then force on it is
A
$$q\left( {\overrightarrow v \times \overrightarrow B } \right)$$
B
$$q\overrightarrow E + q\left( {\overrightarrow v \times \overrightarrow B } \right)$$
C
$$q\overrightarrow E + \overrightarrow q \left( {\overrightarrow B \times \overrightarrow v } \right)$$
D
$$q\overrightarrow B + \overrightarrow q \left( {\overrightarrow E \times \overrightarrow v } \right)$$