If r denotes the distance between sun and the earth, then the angular momentum of the earth around the sun is proportional to
Options
(a) r³/r (b) r (c) √r (d) r²
Correct Answer: […]
A particle has initial velocity (3i + 4j) and acceleration (0.1 i+0.3j). It’s speed after 10s is
Options
(a) 7 units (b) √7 m/s² (c) 5 m/s² (d) 1 m/s²
Correct Answer:
5 m/s²
Under the action of a force F=cx, the position of a body changes from 0 to x.The work done is
Options
(a) 1/2 Cx ² (b) Cx ² (c) Cx (d) 1/2 Cx
The mass of a lift is 2000kg. When the tension in the supporting cable is 28000N, then its acceleration is
Options
(a) 4ms⁻² upwards (b) 4 ms⁻² downwards (c) 14 ms⁻² upwards (d) […]
A body under the action of a force F⃗ = 6i⃗–8j⃗+10k⃗, acquires an acceleration of 1 m/s². The mass of this body must be
Options
(a) 10 kg (b) 20 kg (c) 10 […]
Probiotics are
Options
(a) cancer inducing microbes (b) new kind of food allergens (c) live microbial food supplement (d) safe antibiotics
Correct Answer:
live microbial food supplement
Explanation:
No explanation available. Be the […]
Mast cells secrete
Options
(a) myoglobin (b) histamine (c) hemoglobin (d) hippurin
Correct Answer:
histamine
Explanation:
At the site of infection, the infectious organism release some chemical to increase the flow of mast […]
There is no DNA in:
Options
(a) mature RBC s (b) a mature spermatozoan (c) hair root (d) an enucleated ovum
Correct Answer:
mature RBC s
Explanation:
Red blood cells are the most common […]
Bundle sheath cells
Options
(a) Are rich in RuBisCO (b) Are rich in PEP carboxylase (c) lack RuBisCO (d) Lack both RuBisCO and PEP carboxylase
Correct Answer:
Are rich in RuBisCO
Explanation:
In C₄ […]
A drupe develops in
Options
(a) mango (b) wheat (c) pea (d) tomato
Correct Answer:
mango
Explanation:
Some fleshy fryits such as mango, plum etc. usually ave a single hard stone that […]
2017 Copyright Doctor Dreams Training Academy