1
IIT-JEE 2011 Paper 2 Offline
Numerical
+3
-0

A silver sphere of radius 1 cm and work function 4.7 eV is suspended from an insulating thread in free-space. It is under continuous illumination of 200 nm wavelength light. As photoelectrons are emitted, the sphere gets charged and acquires a potential. The maximum number of photoelectrons emitted from the spheres is A $$\times$$ 102 (where 1 < A < 10). The value of Z is _____________.

2
IIT-JEE 2011 Paper 2 Offline
Numerical
+3
-0

Two batteries of different emfs and different internal resistance are connected as shown. The voltage across AB in volts is __________.

3
IIT-JEE 2011 Paper 2 Offline
Numerical
+3
-0

Water (with refractive index = 4/3) in a tank is 18 cm deep. Oil of refractive index 7/4 lies on water making a convex surface of radius of curvature R = 6 cm as shown. Consider oil to act a thin lens. An object S is placed 24 cm above water surface. The location of its image is at x cm above the bottom of the tank. Then x is __________.

4
IIT-JEE 2011 Paper 2 Offline
+3
-1

One mole of a monatomic gas is taken through a cycle ABCDA as shown in the PV diagram. Column II give the characteristics involved in the cycle. Match them with each of the processes given in Column I.

Column I Column II
(A) Process A$$\to$$ B (P) Internal energy decreases.
(B) Process B$$\to$$C (Q) Internal energy increase.
(C) Process C$$\to$$D (R) Heat is lost.
(D) Process D$$\to$$A (S) Heat is gained.
(T) Work is done on the gas.

A
(A)$$\to$$(P), (R), (T); (B)$$\to$$(P), R; (C)$$\to$$(Q), (S); (D)$$\to$$(R), (T)
B
(A)$$\to$$(P), (T); (B)$$\to$$(P), (R); (C)$$\to$$(Q), (S); (D)$$\to$$(R)
C
(A)$$\to$$(R), (T); (B)$$\to$$(P), (R); (C)$$\to$$(S); (D)$$\to$$(R), (T)
D
(A)$$\to$$(P), (R), (T); (B)$$\to$$(P), (R); (C)$$\to$$(Q); (D)$$\to$$(R), (T)
EXAM MAP
Medical
NEET