Two forces of equal magnitude F act on two isolated bodies P and Q as shown in the figure. The mass of body Q is three times that of body P. The magnitude of the acceleration of P is
AThree times that of Q
B(1/3) that of Q
CNine times that of Q
D(1/9) that of Q.
A fire can be made by rubbing two objects together such as rubbing two pieces of rock having rough surfaces. Which of the following statements explain why a fire can be made by rubbing two objects together?
(i) Friction slows down moving objects.
(ii) Fire gives out heat and light energy.
(iii) Friction produces heat.
(iv) Fire has no mass.
C(i), (ii) and (iii) only
D(ii) and (iv) only
Which of the following vehicles runs on diesel or petrol?
DAll of these
If bikes have a small engine they will work on petrol only. If cars have medium engine they will work on both petrol and diesel. If trucks have large engine they will work on diesel only.CC of: Bikes: 100 CC Cars: 1000 CC Trucks: 2000 CC And how can you relate all of this with electricity? You have given nowadays cars run on CNG, solar energy and electricity! HOW IN THE WORLD CAN YOU RELATE PETROL AND DIESEL with SOLAR ENERGY AND ELECTRICITY? This question has a simple answer. If you think D answer the questions listed below. 1. Does truck run on petrol? No. 2. Does car run on both petrol and diesel? Yes. 3. Does motorbike run on diesel? No. So answer is A So simple it is!!! If you think D please explain it to me If you think A please do agree
Which of the following statements are incorrect?
(i) Cellular respiration is a physical process in which food molecules are broken down into carbon dioxide and water.
(ii) Anaerobic respiration involves breakdown of glucose into alcohol and carbon dioxide.
(iii) Breathing rate varies according to oxygen requirement of the body.
(iv) On land, frogs breathe through lungs and in water by gills.
(v) Respiration in plants occurs through stomata and lenticels.
A(i), (ii) and (iv) only
B(i) and (iv) only
C(ii), (iii) and (v) only
D(ii), (iii) and (iv) only
In the following four groups of plant parts used as food, one member is odd one out. Select the option in which the odd member is encircled INCORRECTLY?
AWheat, Maize, , Bajra
BArhar, , Moong, Rajma
C , Turmeric, Potato, Ginger
D , Coriander, Methi, Sugarcane
In how many different ways can the tiger return to its den?