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# SCRA Exam Paper on Physical Science- 2010

Find here the 2010 SCRA Question Paper on Physical Sciences

Solve the SCRA Exam Question Paper of the previous year. Prepare better.

Physical Sciences

1. What is the lateral displacement of a ray of light passing through a parrllel plate of glass of thickness t with angles of incidence and refraction respectively as α and β ?

(a) t sec (α/β)

(b) t sin(α-β) sec β

(c) t sin (α-β)

(d) t cos (α-β) cosec β

2. A spacesship is a launched into a cirular orbit close to the Earth's surface. Waht additional velocity has to be imparted to the spaceship to overcome the gravitational pull ? (radius of the Earth is R)

(a) gR

(b) √2 gR

(c) (√-1) √gR

(d) (√2-1) gR

3. What is the trajectory of a particles if it moves according to the kaw x=a sin(ωt) and y=a cos(2ωt) ?

(a) Circle

(b) Parabola

(c) Hyperbola

(d) Elipse

4. The velocity of a particle moving in the positive direction of x-axis varies as v=α√x where α is a positive constant. Assuming t=0, the particle is at x=0. Waht is the time dependence on displacement ?

(a) t=2x/α

(b) t=2√x/α

(c) t=2√x/√α

(d) t=√2x/√α

5. A Particle of mass m moves in a borizontal circle of radius r under the influence of a centripetal force given by-kr-2, where k is a constant. What is the energy of the particle ?

(a) k/r

(b) -k/(2r)

(c) k/(2r)

(d) -k/r