Physics 2008 | Study Mode

Join Discuss Share Question Share to WhatsApp
Question 1
A
I and II only 
B
I and III only 
C
I, II and III only 
D
I, III and IV only 
Explanation.
Share Answer Torque has the same unit as moment = Nm
i, iii and iv have correct units.

Correct Option:
D
Join Discuss Share Question Share to WhatsApp
Question 4
A
I and II only 
B
I and III only 
C
II and III only 
D
I, II and III 
Explanation.
Share Answer

The condition (ii) is a condition for an equilibrium of parallel forces only while conditions (i) and (iii) are correct for both parallel and non- parallel coplanar forces.


Correct Option:
B
Join Discuss Share Question Share to WhatsApp
Question 6
A
h =(u)2/g 
B
h = (u)2/4g 
C
h = (2u)2/g 
D
h = (u)2/2g 
Explanation.
Share Answer From V2 = U2 + 2as
O = U 2 - 2gH, since at maximum height H, the final velocity, v = O.
H = (U)2/2g
PE = KE at (1)/2 H = (U)2/2g x (1)/2 = U2 4g

Correct Option:
B
Join Discuss Share Question Share to WhatsApp
Question 7
A
diffusion 
B
cohesion 
C
adhesion 
D
viscosity 
Explanation.
Share Answer since currency and finger contain unlike molecules, the force involved is adhesion

Correct Option:
C
Join Discuss Share Question Share to WhatsApp
Question 8
A
25 
B
2.5 
C
0.5 
D
0.25 
Explanation.
Share Answer F = (mv)2/r = (100 x 5)2 = 250N
R = mg = 100 x 10 - 1000N
coefficient of friction,
= (F)/R = (250)/1000 = 0.25

Correct Option:
D
Join Discuss Share Question Share to WhatsApp
Question 9
A
0.625 J 
B
6.250 J 
C
62.500 J 
D
625.000 J 
Explanation.
Share Answer Energy stored in a spring = (1)/2 K e2 = (1)/2 x 500(0.05)2 = 0.625J

Correct Option:
A
Join Discuss Share Question Share to WhatsApp
Question 10
A
0.8 
B
1.1 
C
1.2 
D
1.3 
Explanation.
Share Answer hlpl = hwpw
where, L =liquid and W = water
(pl)/pw = (hw)/hl = (26.5)/20.4
= 1.299

Correct Option:
D
Next Page
Question Map
Quiz link
Share Physics 2008 with your friends
Share to WhatsApp Share Quiz CBT mode Study mode copy link