User Forum

A solid object moving through a fluid experiences a frictional force exerted by the fluid. At a particular instant the frictional force exerted by the fluid does not depend on

A Shape of the object
B Speed of the object
C Nature of the fluid
D Volume of the fluid.

A car is travelling at a constant speed along a road, and drives onto a large patch of oil. The driver applies the brakes to stop the car. Compare to braking on a dry road, what may happen?

A The car slows down more quickly because of the reduced friction between the tyres and the road.
B The car speeds up because of the reduced friction between the tyres and the road.
C The car takes longer time to slow down because of the reduced friction between the tyres and the road.
D The car takes longer time to slow down because of the greater friction between the tyres and the road.

‘X’ is a protected land area reserved for the conservation and betterment of wildlife. Cultivation, grazing and habitat manipulation are not allowed here. X could be

A Kaziranga National Park, Assam
B Kanha National Park, Uttarakhand
C Pachmarhi Biosphere Reserve, Uttar Pradesh
D National Zoological Park, New Delhi.

The diagram shows an object O viewed using two mirrors. A person looks into the mirrors as shown. At which position is the image of O seen?


Aa
Bb
Cc
Dd

Study the given diagram. Which alphabets best describe the Sun and the Moon respectively?


A f and d
B g and d
C g and e
D f and e

The given figures show different types of teeth. Which of these is used for biting and cutting of food?


A X
B W
C Both W and Y
D Both Y and Z

Identify the figures (W – Z) and select the incorrect statement regarding these.


A W is a modified tap root which serves as a storage organ.
B Edible part of X is the same as edible part of onion.
C Y is a fruit which is eaten as a vegetable.
D Edible part of Z is the same as the edible part of potato.

Select a figurefrom the options whichis exactly embedded in Fig. (X) as one of its parts.


A
B
C
D