Physics-

General

Easy

Question

# In the given figure, what is the angle of prism

- A
- B
- C
- D

## The correct answer is: C

### Angle of prism is the angle between incident and emergent surfaces.

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### A bob of mass is suspended by a massless string of length . The horizontal velocity at position is just sufficient to make it reach the point . The angle at which the speed of the bob is half of that at , satisfies

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(where a, b are integers) =

(where a, b are integers) =

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### ${\int}_{-\pi /4}^{\pi /4}\u200a\frac{{e}^{x}(x\mathrm{sin}x)}{{e}^{2x}-1}dx$ is equal to

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### Let $f:R\to R,f\left(x\right)=\left\{\begin{array}{c}|x-[x\left]\right|,\left[x\right]\\ |x-[x+1\left]\right|,\left[x\right]\end{array}\right.$$\begin{array}{r}\text{is odd}\\ 1\text{is even where [.]}\end{array}$ denotes greatest integer function, then ${\int}_{-2}^{4}\u200af\left(x\right)dx$ is equal to

### Let $f:R\to R,f\left(x\right)=\left\{\begin{array}{c}|x-[x\left]\right|,\left[x\right]\\ |x-[x+1\left]\right|,\left[x\right]\end{array}\right.$$\begin{array}{r}\text{is odd}\\ 1\text{is even where [.]}\end{array}$ denotes greatest integer function, then ${\int}_{-2}^{4}\u200af\left(x\right)dx$ is equal to

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### The value of ${\int}_{0}^{1}\u200a|\mathrm{sin}2\pi x|\mid dx$ is equal to

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### The value of (where {x} is the fractional part of x) is

### The value of (where {x} is the fractional part of x) is

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### A bob of mass *M* is suspended by a massless string of length *L*. The horizontal velocity $v$ at position *A* is just sufficient to make it reach the point *B*. The angle $\theta $ at which the speed of the bob is half of that at *A*, satisfies

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### A piece of wire is bent in the shape of a parabola -axis vertical) with a bead of mass on it. The bead can side on the wire without friction. It stays at the lowest point of the parabola when the wire is at rest. The wire is now accelerated parallel to the -axis with a constant acceleration . The distance of the new equilibrium position of the bead, where the bead can stay at rest with respect to the wire, from the -axis is

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### A point *P* moves in counter-clockwise direction on a circular path as shown in the figure. The movement of *P* is such that it sweeps out length where is in metre and *t *is in second. The radius of the path is 20 m. The acceleration of *P* when *t* =2s is nearly

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### The equation of the plane containing the line where al + bm + cn is equal to

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### A small body of mass slides down from the top of a hemisphere of radius . The surface of block and hemisphere are frictionless. The height at which the body lose contact with the surface of the sphere is

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