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

Click on the link below to download the complete paper.

**SCRA Exam Paper on Physical Science - 2010**