Electromagnetic radiations described by the equation: $$E = 100 \left[ \sin \left( 2 \times 10 ^ { 15 } \right) t + \sin \left( 6.28 \times 10 ^ { 15 } \right) t \right] V / m$$ are incident on a photosensitive surface having work function $$1.5\ eV$$. The maximum kinetic energy of photoelectrons will be 

1) 0.125 eV
2) 2.625 eV
3) 4.125 eV
4) 6.125 eV

A spring scale reads 20. newtons as it pulls a 5.0-kilogram mass across a table. What is the magnitude of the force exerted by the mass on the spring scale?

1) 49 N
2) 20. N
3) 5.0 N
4) 4.0 N

Glycerol is purified by

1) Steam distillation

2) Sublimation

3) Simple distillation

4) Vacuum distillation

The electric field in a region of space is given by $$\vec{E}=(\hat{5i}+\hat{2j}  )Nc^{-1}$$ . The electric flux due to this field through an area $$2m^{2}$$ lying in the Y-Z plane in S.I. units is

1) 2√29
2) 20
3) 10√2
4) 10

which one of the following statement is correct:

(1)Malphigian corpuscles + glomerulus constitute the Bowman's capsule
(2) Bowman';s capsule + Malphigian tubules constitute the glomerulus
(3) Bowman's capsule and glomerulus together constitute renal corpuscle
(4) Renal corpuscle and glomerulus constitute Malphigian corpuscle

Haemopoesis takes place in the bone marraw of one of the bone
1. Femur
2. Radius
3. Vertebrae
4. Humerus

Which of the following is an egg laying mammal ?
1. Platypes
2. Otter
3. Seal
4. Walrus

Granules of calcium carbonate contained in the vertebrate inner ear, is called-

(1) Otocyst         (2) Otolith

(3) Statocyst     (4) Ossein

The ratio of the time periods for two satellites of equal mass in circular orbits of radii R and 9 R is
 
 1) 9 : 1
 2) 1 : 9
 3) 1 : 27
 4) 27 : 1

The yellow fibres contain a protein called:
1. collagen 
2. actin 
3. elastin 
4. myosin